/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=0.5 --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/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:32,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:32,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:32,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:32,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:32,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:32,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:32,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:32,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:32,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:32,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:32,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:32,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:32,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:32,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:32,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:32,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:32,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:32,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:32,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:32,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:32,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:32,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:32,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:32,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:32,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:32,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:32,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:32,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:32,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:32,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:32,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:32,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:32,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:32,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:32,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:32,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:32,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:32,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:32,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:32,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:32,644 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 14:42:32,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:32,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:32,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:32,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:32,691 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:32,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:32,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:32,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:32,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:32,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:32,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:32,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:32,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:32,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:32,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:32,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:32,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:32,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:32,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:32,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:32,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:32,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:32,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:32,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:32,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:32,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:32,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:32,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:32,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:32,697 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:42:33,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:33,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:33,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:33,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:33,178 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:33,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 14:42:33,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae3dd6598/946a295f4c144d6284bd6ffa843d1aba/FLAG901611494 [2020-09-25 14:42:33,864 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:33,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 14:42:33,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae3dd6598/946a295f4c144d6284bd6ffa843d1aba/FLAG901611494 [2020-09-25 14:42:34,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae3dd6598/946a295f4c144d6284bd6ffa843d1aba [2020-09-25 14:42:34,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:34,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:34,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:34,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:34,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:34,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:34,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3705ef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34, skipping insertion in model container [2020-09-25 14:42:34,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:34,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:34,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:34,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:34,682 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:34,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:34,933 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:34,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34 WrapperNode [2020-09-25 14:42:34,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:34,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:34,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:34,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:34,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:34,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:34,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:34,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:35,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:35,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:35,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (1/1) ... [2020-09-25 14:42:35,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:35,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:35,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:35,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:35,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (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 14:42:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:36,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:36,616 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:36,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:36 BoogieIcfgContainer [2020-09-25 14:42:36,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:36,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:36,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:36,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:36,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:34" (1/3) ... [2020-09-25 14:42:36,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:36, skipping insertion in model container [2020-09-25 14:42:36,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:34" (2/3) ... [2020-09-25 14:42:36,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31398288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:36, skipping insertion in model container [2020-09-25 14:42:36,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:36" (3/3) ... [2020-09-25 14:42:36,646 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-25 14:42:36,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:36,675 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:36,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:36,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:36,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:36,754 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:36,754 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:36,754 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:36,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:36,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:36,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 14:42:36,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:36,819 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] [2020-09-25 14:42:36,820 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:36,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:36,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-25 14:42:36,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:36,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732017845] [2020-09-25 14:42:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:37,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:42:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 14:42:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:37,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:42:37,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:42:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:37,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:37,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:42:37,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:37,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:37,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:37,891 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 14:42:37,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732017845] [2020-09-25 14:42:37,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:37,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:42:37,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734504396] [2020-09-25 14:42:37,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:37,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:37,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:37,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:37,929 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 14:42:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:40,362 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 14:42:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:42:40,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 14:42:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:40,397 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 14:42:40,397 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 14:42:40,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 14:42:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 14:42:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:42:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 14:42:40,524 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-25 14:42:40,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:40,525 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 14:42:40,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:42:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 14:42:40,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 14:42:40,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:40,535 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, 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] [2020-09-25 14:42:40,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:40,536 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:40,537 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-25 14:42:40,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:40,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436041920] [2020-09-25 14:42:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:42,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:42,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:45,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 14:42:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:42:45,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:45,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 14:42:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:42:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:45,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:45,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:45,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:45,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:45,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:45,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 14:42:45,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:45,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:42:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:45,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436041920] [2020-09-25 14:42:45,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:45,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:42:45,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524590309] [2020-09-25 14:42:46,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:42:46,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:46,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:42:46,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:46,003 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 6 states. [2020-09-25 14:42:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:48,570 INFO L93 Difference]: Finished difference Result 2339 states and 3377 transitions. [2020-09-25 14:42:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:42:48,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 14:42:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:48,584 INFO L225 Difference]: With dead ends: 2339 [2020-09-25 14:42:48,585 INFO L226 Difference]: Without dead ends: 1659 [2020-09-25 14:42:48,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 14:42:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-09-25 14:42:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1155. [2020-09-25 14:42:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-25 14:42:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1532 transitions. [2020-09-25 14:42:48,659 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1532 transitions. Word has length 151 [2020-09-25 14:42:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:48,660 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1532 transitions. [2020-09-25 14:42:48,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:42:48,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1532 transitions. [2020-09-25 14:42:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 14:42:48,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:48,668 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, 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] [2020-09-25 14:42:48,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:48,668 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1830974367, now seen corresponding path program 1 times [2020-09-25 14:42:48,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:48,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26154053] [2020-09-25 14:42:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:53,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 14:42:53,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:42:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:42:53,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:53,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:42:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:53,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:53,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:53,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:42:53,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:53,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:53,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:54,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 14:42:54,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 14:42:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:54,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:42:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:54,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26154053] [2020-09-25 14:42:54,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:54,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:54,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708032975] [2020-09-25 14:42:54,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:54,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:54,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:54,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:54,225 INFO L87 Difference]: Start difference. First operand 1155 states and 1532 transitions. Second operand 7 states. [2020-09-25 14:42:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:56,298 INFO L93 Difference]: Finished difference Result 2373 states and 3197 transitions. [2020-09-25 14:42:56,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:56,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 14:42:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:56,305 INFO L225 Difference]: With dead ends: 2373 [2020-09-25 14:42:56,306 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 14:42:56,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 14:42:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 865. [2020-09-25 14:42:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-09-25 14:42:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1009 transitions. [2020-09-25 14:42:56,343 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1009 transitions. Word has length 190 [2020-09-25 14:42:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:56,344 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1009 transitions. [2020-09-25 14:42:56,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1009 transitions. [2020-09-25 14:42:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 14:42:56,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:56,348 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, 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] [2020-09-25 14:42:56,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:56,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1089799840, now seen corresponding path program 1 times [2020-09-25 14:42:56,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:56,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982826002] [2020-09-25 14:42:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:01,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 14:43:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:43:01,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:01,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:43:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:01,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:01,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:01,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:43:01,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:01,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:43:01,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:01,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 14:43:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 14:43:01,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:01,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:43:01,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:43:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:02,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982826002] [2020-09-25 14:43:02,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:02,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:02,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932951272] [2020-09-25 14:43:02,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:02,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:02,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:02,273 INFO L87 Difference]: Start difference. First operand 865 states and 1009 transitions. Second operand 7 states. [2020-09-25 14:43:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:04,384 INFO L93 Difference]: Finished difference Result 1897 states and 2217 transitions. [2020-09-25 14:43:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:43:04,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 14:43:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:04,390 INFO L225 Difference]: With dead ends: 1897 [2020-09-25 14:43:04,390 INFO L226 Difference]: Without dead ends: 1047 [2020-09-25 14:43:04,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-09-25 14:43:04,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1017. [2020-09-25 14:43:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-09-25 14:43:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1176 transitions. [2020-09-25 14:43:04,430 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1176 transitions. Word has length 195 [2020-09-25 14:43:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:04,431 INFO L479 AbstractCegarLoop]: Abstraction has 1017 states and 1176 transitions. [2020-09-25 14:43:04,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1176 transitions. [2020-09-25 14:43:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 14:43:04,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:04,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:04,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:04,438 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash -585547793, now seen corresponding path program 1 times [2020-09-25 14:43:04,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:04,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244534875] [2020-09-25 14:43:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:04,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:07,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 14:43:07,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3284 [2020-09-25 14:43:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:07,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:43:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 14:43:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:07,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:07,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:07,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:43:07,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:07,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:07,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:08,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 14:43:08,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:08,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:43:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 14:43:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-09-25 14:43:08,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 14:43:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:43:08,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244534875] [2020-09-25 14:43:08,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:08,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:08,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89126602] [2020-09-25 14:43:08,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:08,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:08,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:08,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:08,872 INFO L87 Difference]: Start difference. First operand 1017 states and 1176 transitions. Second operand 8 states. [2020-09-25 14:43:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:12,803 INFO L93 Difference]: Finished difference Result 2381 states and 2851 transitions. [2020-09-25 14:43:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:12,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2020-09-25 14:43:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:12,811 INFO L225 Difference]: With dead ends: 2381 [2020-09-25 14:43:12,811 INFO L226 Difference]: Without dead ends: 1500 [2020-09-25 14:43:12,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-09-25 14:43:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1476. [2020-09-25 14:43:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-09-25 14:43:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1718 transitions. [2020-09-25 14:43:12,859 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1718 transitions. Word has length 269 [2020-09-25 14:43:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:12,859 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 1718 transitions. [2020-09-25 14:43:12,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1718 transitions. [2020-09-25 14:43:12,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-25 14:43:12,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:12,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:12,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:12,867 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:12,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1995565262, now seen corresponding path program 1 times [2020-09-25 14:43:12,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:12,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225916654] [2020-09-25 14:43:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-09-25 14:43:17,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:43:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 14:43:17,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 14:43:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 14:43:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:18,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:18,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:18,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:18,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:18,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:43:18,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:18,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:43:18,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:43:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:18,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 14:43:18,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:18,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 14:43:18,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:18,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:43:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:18,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225916654] [2020-09-25 14:43:18,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:18,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:43:18,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11003153] [2020-09-25 14:43:18,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:18,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:18,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:18,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:18,628 INFO L87 Difference]: Start difference. First operand 1476 states and 1718 transitions. Second operand 7 states.