/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/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:29,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:29,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:29,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:29,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:29,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:29,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:29,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:29,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:29,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:29,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:29,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:29,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:29,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:29,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:29,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:29,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:29,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:29,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:29,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:29,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:29,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:29,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:29,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:29,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:29,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:29,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:29,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:29,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:29,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:29,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:29,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:29,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:29,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:29,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:29,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:29,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:29,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:29,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:29,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:29,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:29,656 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 14:37:29,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:29,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:29,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:29,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:29,704 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:29,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:29,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:29,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:29,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:29,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:29,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:29,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:29,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:29,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:29,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:29,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:29,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:29,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:29,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:29,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:29,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:29,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:29,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:29,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:29,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:29,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:29,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:29,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:29,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:29,711 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 14:37:30,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:30,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:30,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:30,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:30,226 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:30,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 14:37:30,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bafac5c11/d00ceb63d7574de0bc003845a8c1a6ca/FLAG9a8e8785e [2020-09-25 14:37:30,956 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:30,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 14:37:30,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bafac5c11/d00ceb63d7574de0bc003845a8c1a6ca/FLAG9a8e8785e [2020-09-25 14:37:31,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bafac5c11/d00ceb63d7574de0bc003845a8c1a6ca [2020-09-25 14:37:31,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:31,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:31,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:31,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:31,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:31,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:31" (1/1) ... [2020-09-25 14:37:31,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:31, skipping insertion in model container [2020-09-25 14:37:31,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:31" (1/1) ... [2020-09-25 14:37:31,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:31,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:31,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:31,824 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:32,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:32,052 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:32,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32 WrapperNode [2020-09-25 14:37:32,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:32,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:32,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:32,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:32,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... [2020-09-25 14:37:32,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... [2020-09-25 14:37:32,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... [2020-09-25 14:37:32,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... [2020-09-25 14:37:32,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... [2020-09-25 14:37:32,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... [2020-09-25 14:37:32,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... [2020-09-25 14:37:32,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:32,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:32,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:32,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:32,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:32,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:32,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:32,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:33,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:33,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:33,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:33 BoogieIcfgContainer [2020-09-25 14:37:33,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:33,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:33,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:33,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:33,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:31" (1/3) ... [2020-09-25 14:37:33,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c474df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:33, skipping insertion in model container [2020-09-25 14:37:33,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:32" (2/3) ... [2020-09-25 14:37:33,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c474df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:33, skipping insertion in model container [2020-09-25 14:37:33,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:33" (3/3) ... [2020-09-25 14:37:33,613 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 14:37:33,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:33,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:33,664 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:33,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:33,708 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:33,709 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:33,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:33,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:33,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:33,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:33,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 14:37:33,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:33,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:33,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:33,798 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 14:37:33,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:33,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828324473] [2020-09-25 14:37:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:34,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 14:37:39,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4991 [2020-09-25 14:37:39,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:39,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:37:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:37:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:37:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:39,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:39,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:37:39,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:39,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:39,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:39,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:39,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:37:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:39,393 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 14:37:39,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828324473] [2020-09-25 14:37:39,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:39,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:39,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7704081] [2020-09-25 14:37:39,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:39,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:39,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:39,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:39,429 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:41,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:41,370 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 14:37:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:41,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 14:37:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:41,395 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 14:37:41,396 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 14:37:41,405 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 14:37:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 14:37:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 14:37:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 14:37:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 14:37:41,526 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 112 [2020-09-25 14:37:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:41,527 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 14:37:41,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 14:37:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 14:37:41,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:41,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:41,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:41,536 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:41,536 INFO L82 PathProgramCache]: Analyzing trace with hash -88721492, now seen corresponding path program 1 times [2020-09-25 14:37:41,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:41,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511672376] [2020-09-25 14:37:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:41,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:37:46,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:37:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:37:46,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:37:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 14:37:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:46,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:37:46,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:37:46,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:37:46,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:46,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:37:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:46,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511672376] [2020-09-25 14:37:46,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:46,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:46,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863988007] [2020-09-25 14:37:46,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:46,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:46,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:46,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:46,917 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 14:37:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:48,810 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 14:37:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:48,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 14:37:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:48,822 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 14:37:48,822 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 14:37:48,827 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 14:37:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 14:37:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 14:37:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:37:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 14:37:48,884 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 129 [2020-09-25 14:37:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:48,887 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 14:37:48,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 14:37:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 14:37:48,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:48,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:37:48,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:48,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1474286310, now seen corresponding path program 1 times [2020-09-25 14:37:48,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:48,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205429669] [2020-09-25 14:37:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 14:37:53,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:37:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 14:37:53,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:53,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:37:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:37:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:54,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:54,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:54,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:54,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:54,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:54,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:37:54,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:54,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:37:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:54,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:37:54,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 14:37:54,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:54,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:54,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:37:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:37:54,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205429669] [2020-09-25 14:37:54,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:54,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:37:54,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835116158] [2020-09-25 14:37:54,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:37:54,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:54,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:37:54,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:37:54,306 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 14:37:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:56,357 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 14:37:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:37:56,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-25 14:37:56,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:56,370 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 14:37:56,371 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 14:37:56,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:37:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 14:37:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 14:37:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 14:37:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 14:37:56,454 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 174 [2020-09-25 14:37:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:56,456 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 14:37:56,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:37:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 14:37:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:37:56,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:56,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:37:56,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:56,468 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1304892871, now seen corresponding path program 1 times [2020-09-25 14:37:56,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:56,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039815645] [2020-09-25 14:37:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:01,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:38:01,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:38:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:38:01,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:01,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:38:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 14:38:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:01,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:01,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:01,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:01,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:01,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:38:01,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:01,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:38:01,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:38:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:01,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:38:01,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:01,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 14:38:01,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:01,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:38:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:38:01,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039815645] [2020-09-25 14:38:01,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:01,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:38:01,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478036945] [2020-09-25 14:38:01,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:38:01,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:01,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:38:01,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:01,875 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 6 states. [2020-09-25 14:38:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:03,786 INFO L93 Difference]: Finished difference Result 2177 states and 2709 transitions. [2020-09-25 14:38:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:38:03,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-25 14:38:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:03,795 INFO L225 Difference]: With dead ends: 2177 [2020-09-25 14:38:03,796 INFO L226 Difference]: Without dead ends: 1124 [2020-09-25 14:38:03,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:38:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-09-25 14:38:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 934. [2020-09-25 14:38:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2020-09-25 14:38:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1089 transitions. [2020-09-25 14:38:03,838 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1089 transitions. Word has length 181 [2020-09-25 14:38:03,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:03,838 INFO L479 AbstractCegarLoop]: Abstraction has 934 states and 1089 transitions. [2020-09-25 14:38:03,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:38:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1089 transitions. [2020-09-25 14:38:03,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 14:38:03,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:03,843 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, 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] [2020-09-25 14:38:03,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:03,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2058707655, now seen corresponding path program 1 times [2020-09-25 14:38:03,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:03,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379354007] [2020-09-25 14:38:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 14:38:06,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:38:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-09-25 14:38:06,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:38:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 14:38:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:06,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:06,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:38:06,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:38:06,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:38:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:06,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 14:38:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:38:06,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:06,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 14:38:06,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:38:06,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:38:06,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379354007] [2020-09-25 14:38:06,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:06,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:06,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537581059] [2020-09-25 14:38:06,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:06,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:06,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:06,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:06,872 INFO L87 Difference]: Start difference. First operand 934 states and 1089 transitions. Second operand 7 states. [2020-09-25 14:38:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:09,106 INFO L93 Difference]: Finished difference Result 2472 states and 2955 transitions. [2020-09-25 14:38:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:38:09,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-25 14:38:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:09,114 INFO L225 Difference]: With dead ends: 2472 [2020-09-25 14:38:09,114 INFO L226 Difference]: Without dead ends: 1562 [2020-09-25 14:38:09,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 14:38:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-09-25 14:38:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1454. [2020-09-25 14:38:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-09-25 14:38:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1710 transitions. [2020-09-25 14:38:09,168 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1710 transitions. Word has length 196 [2020-09-25 14:38:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:09,169 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1710 transitions. [2020-09-25 14:38:09,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:38:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1710 transitions. [2020-09-25 14:38:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 14:38:09,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:09,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:38:09,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:38:09,176 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:09,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1069377590, now seen corresponding path program 1 times [2020-09-25 14:38:09,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:09,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549637372] [2020-09-25 14:38:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:09,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:14,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 14:38:14,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:38:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:38:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:14,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 14:38:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:38:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:14,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:14,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:14,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:14,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:14,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:14,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:14,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:38:14,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:14,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:38:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:38:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:14,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:38:14,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 14:38:14,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:14,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:38:14,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:38:14,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549637372] [2020-09-25 14:38:14,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:14,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:14,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676861553] [2020-09-25 14:38:14,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:14,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:14,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:14,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:14,542 INFO L87 Difference]: Start difference. First operand 1454 states and 1710 transitions. Second operand 5 states. [2020-09-25 14:38:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:16,292 INFO L93 Difference]: Finished difference Result 1931 states and 2319 transitions. [2020-09-25 14:38:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:16,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-25 14:38:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:16,307 INFO L225 Difference]: With dead ends: 1931 [2020-09-25 14:38:16,307 INFO L226 Difference]: Without dead ends: 1929 [2020-09-25 14:38:16,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 14:38:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2020-09-25 14:38:16,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1452. [2020-09-25 14:38:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-09-25 14:38:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1703 transitions. [2020-09-25 14:38:16,353 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1703 transitions. Word has length 196 [2020-09-25 14:38:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:16,354 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1703 transitions. [2020-09-25 14:38:16,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1703 transitions. [2020-09-25 14:38:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 14:38:16,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:16,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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 14:38:16,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:38:16,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:16,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1668073877, now seen corresponding path program 1 times [2020-09-25 14:38:16,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:16,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817379766] [2020-09-25 14:38:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:16,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:17,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 14:38:17,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-09-25 14:38:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:17,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 14:38:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:38:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:18,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:18,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:38:18,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:18,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:18,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:38:18,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:38:18,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:18,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:18,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 14:38:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:18,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:18,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:18,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:38:18,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:18,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:38:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 14:38:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:18,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:38:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:38:18,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817379766] [2020-09-25 14:38:18,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:18,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:18,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207320017] [2020-09-25 14:38:18,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:18,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:18,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:18,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:18,287 INFO L87 Difference]: Start difference. First operand 1452 states and 1703 transitions. Second operand 7 states.