/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=0.8 --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:07,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:07,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:08,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:08,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:08,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:08,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:08,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:08,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:08,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:08,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:08,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:08,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:08,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:08,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:08,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:08,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:08,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:08,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:08,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:08,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:08,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:08,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:08,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:08,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:08,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:08,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:08,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:08,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:08,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:08,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:08,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:08,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:08,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:08,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:08,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:08,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:08,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:08,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:08,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:08,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:08,100 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 07:52:08,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:08,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:08,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:08,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:08,154 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:08,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:08,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:08,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:08,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:08,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:08,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:08,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:08,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:08,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:08,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:08,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:08,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:08,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:08,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:08,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:08,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:08,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:08,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:08,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:08,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:08,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:08,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:08,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:08,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:08,159 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:52:08,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:08,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:08,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:08,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:08,651 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:08,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 07:52:08,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7955b566d/cfc0802b868c439ca4aba0ac5545a128/FLAGe5c96f83f [2020-09-25 07:52:09,425 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:09,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 07:52:09,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7955b566d/cfc0802b868c439ca4aba0ac5545a128/FLAGe5c96f83f [2020-09-25 07:52:09,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7955b566d/cfc0802b868c439ca4aba0ac5545a128 [2020-09-25 07:52:09,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:09,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:09,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:09,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:09,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:09,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:09" (1/1) ... [2020-09-25 07:52:09,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:09, skipping insertion in model container [2020-09-25 07:52:09,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:09" (1/1) ... [2020-09-25 07:52:09,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:09,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:10,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:10,262 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:10,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:10,546 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:10,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10 WrapperNode [2020-09-25 07:52:10,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:10,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:10,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:10,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:10,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (1/1) ... [2020-09-25 07:52:10,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (1/1) ... [2020-09-25 07:52:10,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (1/1) ... [2020-09-25 07:52:10,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (1/1) ... [2020-09-25 07:52:10,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (1/1) ... [2020-09-25 07:52:10,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (1/1) ... [2020-09-25 07:52:10,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (1/1) ... [2020-09-25 07:52:10,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:10,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:10,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:10,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:10,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (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 07:52:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:12,132 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:12,133 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:12,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:12 BoogieIcfgContainer [2020-09-25 07:52:12,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:12,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:12,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:12,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:12,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:09" (1/3) ... [2020-09-25 07:52:12,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:12, skipping insertion in model container [2020-09-25 07:52:12,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:10" (2/3) ... [2020-09-25 07:52:12,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:12, skipping insertion in model container [2020-09-25 07:52:12,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:12" (3/3) ... [2020-09-25 07:52:12,162 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-25 07:52:12,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:12,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:12,217 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:12,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:12,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:12,265 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:12,265 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:12,265 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:12,265 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:12,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:12,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:52:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 07:52:12,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:12,346 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] [2020-09-25 07:52:12,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:12,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-25 07:52:12,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:12,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 07:52:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:52:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:52:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:52:17,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:17,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:52:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 07:52:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:52:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:17,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:18,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:52:18,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:18,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:52:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:18,109 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 07:52:18,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 07:52:18,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:18,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:52:18,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778784691] [2020-09-25 07:52:18,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:18,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:18,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:18,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:18,145 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 07:52:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:20,365 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 07:52:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:20,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 07:52:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:20,393 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 07:52:20,393 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 07:52:20,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 07:52:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 07:52:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:52:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 07:52:20,513 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-25 07:52:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:20,514 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 07:52:20,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 07:52:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:52:20,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:20,523 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, 1, 1, 1, 1] [2020-09-25 07:52:20,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:20,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:20,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-25 07:52:20,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:20,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160971642] [2020-09-25 07:52:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:25,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:52:25,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:52:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:52:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:25,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:52:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:52:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:25,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:25,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:25,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:52:25,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:25,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:52:25,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:25,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:25,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:25,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:52:25,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:25,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:25,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160971642] [2020-09-25 07:52:25,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:25,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:25,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143978428] [2020-09-25 07:52:25,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:25,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:25,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:25,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:25,854 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 7 states. [2020-09-25 07:52:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:27,640 INFO L93 Difference]: Finished difference Result 1400 states and 1721 transitions. [2020-09-25 07:52:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:27,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 07:52:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:27,651 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 07:52:27,651 INFO L226 Difference]: Without dead ends: 821 [2020-09-25 07:52:27,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:52:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-09-25 07:52:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 759. [2020-09-25 07:52:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-09-25 07:52:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 924 transitions. [2020-09-25 07:52:27,730 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 924 transitions. Word has length 163 [2020-09-25 07:52:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:27,732 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 924 transitions. [2020-09-25 07:52:27,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 924 transitions. [2020-09-25 07:52:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:52:27,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:27,739 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:52:27,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:27,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:27,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:27,740 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-25 07:52:27,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:27,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395493301] [2020-09-25 07:52:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:52:32,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:52:32,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:52:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 07:52:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:32,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:32,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:52:32,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:32,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:32,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:33,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:33,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:52:33,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:33,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:52:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:33,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395493301] [2020-09-25 07:52:33,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:33,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:33,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708450705] [2020-09-25 07:52:33,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:33,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:33,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:33,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:33,106 INFO L87 Difference]: Start difference. First operand 759 states and 924 transitions. Second operand 5 states. [2020-09-25 07:52:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:35,073 INFO L93 Difference]: Finished difference Result 1988 states and 2525 transitions. [2020-09-25 07:52:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:35,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 07:52:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:35,086 INFO L225 Difference]: With dead ends: 1988 [2020-09-25 07:52:35,086 INFO L226 Difference]: Without dead ends: 1253 [2020-09-25 07:52:35,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-09-25 07:52:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1194. [2020-09-25 07:52:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-25 07:52:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1489 transitions. [2020-09-25 07:52:35,148 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1489 transitions. Word has length 163 [2020-09-25 07:52:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:35,150 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 1489 transitions. [2020-09-25 07:52:35,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1489 transitions. [2020-09-25 07:52:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:52:35,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:35,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:35,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:35,157 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:35,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:35,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2135172696, now seen corresponding path program 1 times [2020-09-25 07:52:35,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:35,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33675140] [2020-09-25 07:52:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:40,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 07:52:40,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:52:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:40,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:52:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:52:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:52:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:40,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:40,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:52:40,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:40,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:40,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:52:40,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 07:52:40,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:40,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:52:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:52:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:40,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33675140] [2020-09-25 07:52:40,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:40,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:52:40,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801018730] [2020-09-25 07:52:40,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:52:40,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:40,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:52:40,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:52:40,911 INFO L87 Difference]: Start difference. First operand 1194 states and 1489 transitions. Second operand 10 states. [2020-09-25 07:52:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:44,334 INFO L93 Difference]: Finished difference Result 3341 states and 4377 transitions. [2020-09-25 07:52:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:52:44,334 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 07:52:44,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:44,349 INFO L225 Difference]: With dead ends: 3341 [2020-09-25 07:52:44,349 INFO L226 Difference]: Without dead ends: 1935 [2020-09-25 07:52:44,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:52:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-09-25 07:52:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1492. [2020-09-25 07:52:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-09-25 07:52:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1828 transitions. [2020-09-25 07:52:44,437 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1828 transitions. Word has length 179 [2020-09-25 07:52:44,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:44,438 INFO L479 AbstractCegarLoop]: Abstraction has 1492 states and 1828 transitions. [2020-09-25 07:52:44,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:52:44,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1828 transitions. [2020-09-25 07:52:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 07:52:44,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:44,450 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] [2020-09-25 07:52:44,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:44,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:44,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:44,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1982265959, now seen corresponding path program 1 times [2020-09-25 07:52:44,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:44,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034640890] [2020-09-25 07:52:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:44,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:49,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 07:52:49,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:52:49,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:52:49,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:49,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 07:52:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 07:52:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:49,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:49,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:52:49,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:49,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:49,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 07:52:49,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 07:52:49,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:49,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:52:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:49,790 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 07:52:49,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034640890] [2020-09-25 07:52:49,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:49,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:49,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112803876] [2020-09-25 07:52:49,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:49,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:49,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:49,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:49,793 INFO L87 Difference]: Start difference. First operand 1492 states and 1828 transitions. Second operand 5 states. [2020-09-25 07:52:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:52,243 INFO L93 Difference]: Finished difference Result 4237 states and 5376 transitions. [2020-09-25 07:52:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:52,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 07:52:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:52,279 INFO L225 Difference]: With dead ends: 4237 [2020-09-25 07:52:52,279 INFO L226 Difference]: Without dead ends: 2769 [2020-09-25 07:52:52,285 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 07:52:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2020-09-25 07:52:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2648. [2020-09-25 07:52:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2648 states. [2020-09-25 07:52:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3281 transitions. [2020-09-25 07:52:52,379 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3281 transitions. Word has length 185 [2020-09-25 07:52:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:52,380 INFO L479 AbstractCegarLoop]: Abstraction has 2648 states and 3281 transitions. [2020-09-25 07:52:52,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3281 transitions. [2020-09-25 07:52:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 07:52:52,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:52,393 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, 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] [2020-09-25 07:52:52,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:52,394 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1218049893, now seen corresponding path program 1 times [2020-09-25 07:52:52,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:52,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391620229] [2020-09-25 07:52:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:57,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 07:52:57,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:57,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:52:57,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:57,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 07:52:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 07:52:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:57,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:57,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:57,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:57,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:57,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30