/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem02_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:24:54,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:24:54,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:24:54,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:24:54,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:24:54,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:24:54,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:24:54,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:24:54,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:24:54,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:24:54,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:24:54,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:24:54,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:24:54,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:24:54,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:24:54,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:24:54,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:24:54,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:24:54,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:24:54,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:24:54,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:24:54,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:24:54,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:24:54,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:24:54,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:24:54,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:24:54,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:24:54,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:24:54,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:24:54,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:24:54,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:24:54,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:24:54,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:24:54,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:24:54,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:24:54,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:24:54,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:24:54,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:24:54,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:24:54,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:24:54,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:24:54,762 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 12:24:54,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:24:54,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:24:54,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:24:54,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:24:54,814 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:24:54,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:24:54,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:24:54,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:24:54,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:24:54,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:24:54,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:24:54,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:24:54,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:24:54,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:24:54,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:24:54,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:24:54,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:24:54,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:24:54,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:24:54,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:24:54,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:24:54,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:24:54,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:24:54,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:24:54,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:24:54,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:24:54,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:24:54,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:24:54,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:24:54,821 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:24:55,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:24:55,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:24:55,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:24:55,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:24:55,299 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:24:55,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-09-25 12:24:55,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35cb6bb3d/e3d8ae0a2c004a3abf5447f1fd851786/FLAG88cacc20a [2020-09-25 12:24:56,061 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:24:56,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-09-25 12:24:56,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35cb6bb3d/e3d8ae0a2c004a3abf5447f1fd851786/FLAG88cacc20a [2020-09-25 12:24:56,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35cb6bb3d/e3d8ae0a2c004a3abf5447f1fd851786 [2020-09-25 12:24:56,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:24:56,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:24:56,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:56,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:24:56,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:24:56,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:56" (1/1) ... [2020-09-25 12:24:56,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:56, skipping insertion in model container [2020-09-25 12:24:56,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:56" (1/1) ... [2020-09-25 12:24:56,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:24:56,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:24:56,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:56,881 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:24:57,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:57,049 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:24:57,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57 WrapperNode [2020-09-25 12:24:57,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:57,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:24:57,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:24:57,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:24:57,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (1/1) ... [2020-09-25 12:24:57,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (1/1) ... [2020-09-25 12:24:57,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (1/1) ... [2020-09-25 12:24:57,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (1/1) ... [2020-09-25 12:24:57,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (1/1) ... [2020-09-25 12:24:57,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (1/1) ... [2020-09-25 12:24:57,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (1/1) ... [2020-09-25 12:24:57,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:24:57,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:24:57,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:24:57,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:24:57,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (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 12:24:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:24:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:24:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:24:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:24:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:24:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:24:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:24:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:24:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:24:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:24:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:24:58,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:24:58,596 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:24:58,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:58 BoogieIcfgContainer [2020-09-25 12:24:58,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:24:58,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:24:58,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:24:58,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:24:58,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:24:56" (1/3) ... [2020-09-25 12:24:58,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f309a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:58, skipping insertion in model container [2020-09-25 12:24:58,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:57" (2/3) ... [2020-09-25 12:24:58,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f309a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:58, skipping insertion in model container [2020-09-25 12:24:58,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:58" (3/3) ... [2020-09-25 12:24:58,617 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label43.c [2020-09-25 12:24:58,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:24:58,643 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:24:58,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:24:58,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:24:58,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:24:58,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:24:58,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:24:58,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:24:58,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:24:58,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:24:58,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:24:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:24:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 12:24:58,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:58,762 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] [2020-09-25 12:24:58,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:58,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:58,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1883432242, now seen corresponding path program 1 times [2020-09-25 12:24:58,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:58,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139723733] [2020-09-25 12:24:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:59,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:59,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 12:25:03,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4359 [2020-09-25 12:25:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:03,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:25:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 12:25:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:25:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:25:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:03,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:25:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:03,705 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 12:25:03,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139723733] [2020-09-25 12:25:03,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:03,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:03,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886534896] [2020-09-25 12:25:03,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:03,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:03,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:03,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:03,740 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:05,896 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 12:25:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:05,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-09-25 12:25:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:05,923 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 12:25:05,923 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 12:25:05,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 12:25:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 12:25:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 12:25:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 12:25:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 12:25:06,070 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 111 [2020-09-25 12:25:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:06,071 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 12:25:06,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 12:25:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 12:25:06,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:06,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:06,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:06,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:06,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1592938585, now seen corresponding path program 1 times [2020-09-25 12:25:06,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:06,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276718390] [2020-09-25 12:25:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:06,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:11,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 12:25:11,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:25:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:25:11,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:11,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 12:25:11,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 12:25:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:25:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:11,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:11,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:25:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:25:11,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:11,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:25:11,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:11,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276718390] [2020-09-25 12:25:11,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:11,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:11,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60143815] [2020-09-25 12:25:11,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:11,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:11,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:11,342 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 12:25:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:13,493 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-25 12:25:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:13,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 12:25:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:13,502 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 12:25:13,503 INFO L226 Difference]: Without dead ends: 801 [2020-09-25 12:25:13,506 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 12:25:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-25 12:25:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-25 12:25:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-25 12:25:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-25 12:25:13,540 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 128 [2020-09-25 12:25:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:13,541 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-25 12:25:13,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-25 12:25:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 12:25:13,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:13,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:13,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:13,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:13,548 INFO L82 PathProgramCache]: Analyzing trace with hash 980037392, now seen corresponding path program 1 times [2020-09-25 12:25:13,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:13,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021617205] [2020-09-25 12:25:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:17,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:18,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:18,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 12:25:18,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:25:18,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4731 [2020-09-25 12:25:18,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:18,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:25:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 12:25:18,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:18,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:18,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:18,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:18,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:18,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:18,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:18,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:18,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:25:18,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:25:18,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:18,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:25:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:18,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021617205] [2020-09-25 12:25:18,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:18,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:18,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088259131] [2020-09-25 12:25:18,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:18,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:18,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:18,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:18,552 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-25 12:25:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:20,688 INFO L93 Difference]: Finished difference Result 1709 states and 2048 transitions. [2020-09-25 12:25:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:20,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 12:25:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:20,697 INFO L225 Difference]: With dead ends: 1709 [2020-09-25 12:25:20,697 INFO L226 Difference]: Without dead ends: 955 [2020-09-25 12:25:20,700 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 12:25:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-25 12:25:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-09-25 12:25:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-09-25 12:25:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1073 transitions. [2020-09-25 12:25:20,731 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1073 transitions. Word has length 133 [2020-09-25 12:25:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:20,732 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1073 transitions. [2020-09-25 12:25:20,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1073 transitions. [2020-09-25 12:25:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 12:25:20,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:20,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:20,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:20,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:20,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1352270241, now seen corresponding path program 1 times [2020-09-25 12:25:20,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:20,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343180152] [2020-09-25 12:25:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:25,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:25:25,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:25:25,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:25:25,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:25,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 12:25:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 12:25:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:25,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:25,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:25,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:25,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:25,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:25:25,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:25,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:25:25,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:26,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343180152] [2020-09-25 12:25:26,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:26,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:26,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781585126] [2020-09-25 12:25:26,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:26,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:26,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:26,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:26,034 INFO L87 Difference]: Start difference. First operand 929 states and 1073 transitions. Second operand 5 states. [2020-09-25 12:25:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:28,220 INFO L93 Difference]: Finished difference Result 2615 states and 3096 transitions. [2020-09-25 12:25:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:28,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 12:25:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:28,232 INFO L225 Difference]: With dead ends: 2615 [2020-09-25 12:25:28,232 INFO L226 Difference]: Without dead ends: 1708 [2020-09-25 12:25:28,236 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 12:25:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2020-09-25 12:25:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1584. [2020-09-25 12:25:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-09-25 12:25:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1860 transitions. [2020-09-25 12:25:28,303 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1860 transitions. Word has length 140 [2020-09-25 12:25:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:28,304 INFO L479 AbstractCegarLoop]: Abstraction has 1584 states and 1860 transitions. [2020-09-25 12:25:28,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1860 transitions. [2020-09-25 12:25:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 12:25:28,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:28,312 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] [2020-09-25 12:25:28,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:28,313 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2005749092, now seen corresponding path program 1 times [2020-09-25 12:25:28,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:28,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147602322] [2020-09-25 12:25:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:33,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 12:25:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:25:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:25:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 12:25:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:33,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:33,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:25:33,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:33,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:25:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:33,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:33,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 12:25:33,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 12:25:33,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:33,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:25:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:25:33,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147602322] [2020-09-25 12:25:33,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:33,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:25:33,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602413936] [2020-09-25 12:25:33,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:25:33,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:25:33,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:33,700 INFO L87 Difference]: Start difference. First operand 1584 states and 1860 transitions. Second operand 6 states. [2020-09-25 12:25:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:36,384 INFO L93 Difference]: Finished difference Result 5768 states and 7012 transitions. [2020-09-25 12:25:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:25:36,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2020-09-25 12:25:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:36,408 INFO L225 Difference]: With dead ends: 5768 [2020-09-25 12:25:36,409 INFO L226 Difference]: Without dead ends: 4206 [2020-09-25 12:25:36,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:25:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2020-09-25 12:25:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3999. [2020-09-25 12:25:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3999 states. [2020-09-25 12:25:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 4791 transitions. [2020-09-25 12:25:36,539 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 4791 transitions. Word has length 154 [2020-09-25 12:25:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:36,540 INFO L479 AbstractCegarLoop]: Abstraction has 3999 states and 4791 transitions. [2020-09-25 12:25:36,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:25:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 4791 transitions. [2020-09-25 12:25:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 12:25:36,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:36,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:25:36,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:25:36,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:36,552 INFO L82 PathProgramCache]: Analyzing trace with hash -584227059, now seen corresponding path program 1 times [2020-09-25 12:25:36,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:36,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918548658] [2020-09-25 12:25:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:36,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:39,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:25:39,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:25:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2461 [2020-09-25 12:25:39,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:39,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 12:25:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 12:25:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:39,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:39,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:39,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:39,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:39,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:25:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:39,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:25:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 12:25:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:25:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:25:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:25:39,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918548658] [2020-09-25 12:25:39,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:39,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:25:39,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027278160] [2020-09-25 12:25:39,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:25:39,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:39,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:25:39,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:25:39,322 INFO L87 Difference]: Start difference. First operand 3999 states and 4791 transitions. Second operand 7 states. [2020-09-25 12:25:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:42,444 INFO L93 Difference]: Finished difference Result 13518 states and 17414 transitions. [2020-09-25 12:25:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:25:42,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-09-25 12:25:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:42,500 INFO L225 Difference]: With dead ends: 13518 [2020-09-25 12:25:42,500 INFO L226 Difference]: Without dead ends: 8791 [2020-09-25 12:25:42,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 12:25:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8791 states. [2020-09-25 12:25:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8791 to 7759. [2020-09-25 12:25:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7759 states. [2020-09-25 12:25:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7759 states to 7759 states and 9593 transitions. [2020-09-25 12:25:42,790 INFO L78 Accepts]: Start accepts. Automaton has 7759 states and 9593 transitions. Word has length 158 [2020-09-25 12:25:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:42,791 INFO L479 AbstractCegarLoop]: Abstraction has 7759 states and 9593 transitions. [2020-09-25 12:25:42,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:25:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7759 states and 9593 transitions. [2020-09-25 12:25:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 12:25:42,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:42,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:42,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:25:42,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:42,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1465769009, now seen corresponding path program 1 times [2020-09-25 12:25:42,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:42,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571583334] [2020-09-25 12:25:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking...