/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:50,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:50,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:50,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:50,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:50,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:50,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:50,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:50,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:50,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:50,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:50,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:50,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:50,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:50,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:50,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:50,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:50,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:50,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:50,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:50,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:50,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:50,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:50,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:50,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:50,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:50,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:50,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:50,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:50,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:50,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:50,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:50,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:50,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:50,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:50,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:50,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:50,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:50,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:50,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:50,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:50,123 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 13:28:50,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:50,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:50,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:50,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:50,177 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:50,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:50,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:50,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:50,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:50,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:50,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:50,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:50,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:50,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:50,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:50,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:50,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:50,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:50,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:50,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:50,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:50,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:50,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:50,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:50,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:50,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:50,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:50,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:50,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:50,184 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:28:50,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:50,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:50,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:50,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:50,671 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:50,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 13:28:50,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdb0961e2/577100ce917448c58f9a9defd1e1fb5e/FLAG378d71b91 [2020-09-25 13:28:51,387 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:51,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 13:28:51,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdb0961e2/577100ce917448c58f9a9defd1e1fb5e/FLAG378d71b91 [2020-09-25 13:28:51,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdb0961e2/577100ce917448c58f9a9defd1e1fb5e [2020-09-25 13:28:51,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:51,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:51,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:51,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:51,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:51,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:51" (1/1) ... [2020-09-25 13:28:51,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713e8a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:51, skipping insertion in model container [2020-09-25 13:28:51,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:51" (1/1) ... [2020-09-25 13:28:51,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:51,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:52,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:52,234 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:52,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:52,532 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:52,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52 WrapperNode [2020-09-25 13:28:52,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:52,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:52,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:52,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:52,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (1/1) ... [2020-09-25 13:28:52,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (1/1) ... [2020-09-25 13:28:52,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (1/1) ... [2020-09-25 13:28:52,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (1/1) ... [2020-09-25 13:28:52,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (1/1) ... [2020-09-25 13:28:52,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (1/1) ... [2020-09-25 13:28:52,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (1/1) ... [2020-09-25 13:28:52,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:52,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:52,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:52,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:52,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (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 13:28:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:28:52,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:28:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:54,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:54,517 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:28:54,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:54 BoogieIcfgContainer [2020-09-25 13:28:54,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:54,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:54,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:54,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:54,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:51" (1/3) ... [2020-09-25 13:28:54,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656ea5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:54, skipping insertion in model container [2020-09-25 13:28:54,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:52" (2/3) ... [2020-09-25 13:28:54,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656ea5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:54, skipping insertion in model container [2020-09-25 13:28:54,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:54" (3/3) ... [2020-09-25 13:28:54,537 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 13:28:54,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:54,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:54,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:54,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:54,619 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:54,619 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:54,619 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:54,620 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:54,620 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:54,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:54,620 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:28:54,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 13:28:54,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:54,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:54,675 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 13:28:54,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:54,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858065458] [2020-09-25 13:28:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:00,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 13:29:00,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:29:00,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:29:00,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:00,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:29:00,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 13:29:00,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:00,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:00,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:29:00,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:00,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:29:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:00,394 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 13:29:00,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858065458] [2020-09-25 13:29:00,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:00,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:29:00,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386331035] [2020-09-25 13:29:00,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:29:00,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:00,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:29:00,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:29:00,426 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:29:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:02,601 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 13:29:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:02,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 13:29:02,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:02,627 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 13:29:02,628 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 13:29:02,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 13:29:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 13:29:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:29:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 13:29:02,741 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 13:29:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:02,742 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 13:29:02,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:29:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 13:29:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 13:29:02,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:02,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:02,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:02,753 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 13:29:02,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:02,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029265423] [2020-09-25 13:29:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:07,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:07,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:07,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 13:29:07,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:29:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:29:07,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:07,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:29:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:29:07,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:07,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:07,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:07,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:29:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:07,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 13:29:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:08,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:08,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:08,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:08,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:29:08,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:08,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:29:08,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:08,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029265423] [2020-09-25 13:29:08,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:08,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:08,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360969573] [2020-09-25 13:29:08,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:08,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:08,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:08,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:08,116 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 13:29:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:10,335 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-25 13:29:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:10,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 13:29:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:10,345 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 13:29:10,345 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 13:29:10,348 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 13:29:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 13:29:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 13:29:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 13:29:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 13:29:10,410 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 159 [2020-09-25 13:29:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:10,411 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 13:29:10,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 13:29:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 13:29:10,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:10,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:10,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:10,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:10,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 13:29:10,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:10,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975278365] [2020-09-25 13:29:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:15,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 13:29:15,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:29:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:29:15,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:15,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 13:29:15,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:29:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:15,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:15,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:29:15,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:15,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:15,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:15,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:29:15,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:29:15,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:15,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:29:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:15,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975278365] [2020-09-25 13:29:15,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:15,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:15,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912740173] [2020-09-25 13:29:15,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:15,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:15,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:15,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:15,914 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 13:29:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:18,015 INFO L93 Difference]: Finished difference Result 2372 states and 3027 transitions. [2020-09-25 13:29:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:18,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 13:29:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:18,026 INFO L225 Difference]: With dead ends: 2372 [2020-09-25 13:29:18,026 INFO L226 Difference]: Without dead ends: 1507 [2020-09-25 13:29:18,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-09-25 13:29:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1461. [2020-09-25 13:29:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-09-25 13:29:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1822 transitions. [2020-09-25 13:29:18,078 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1822 transitions. Word has length 168 [2020-09-25 13:29:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:18,079 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1822 transitions. [2020-09-25 13:29:18,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1822 transitions. [2020-09-25 13:29:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 13:29:18,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:18,087 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:18,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:18,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:18,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:18,088 INFO L82 PathProgramCache]: Analyzing trace with hash -266858787, now seen corresponding path program 1 times [2020-09-25 13:29:18,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:18,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10993652] [2020-09-25 13:29:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:23,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 13:29:23,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:29:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 13:29:23,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:23,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:29:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:29:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 13:29:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:23,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:23,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:23,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:23,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:29:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:23,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:23,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:29:23,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:23,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:29:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:23,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:24,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:29:24,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-25 13:29:24,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:24,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:29:24,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 13:29:24,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10993652] [2020-09-25 13:29:24,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:24,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:29:24,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934936459] [2020-09-25 13:29:24,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:29:24,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:24,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:29:24,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:29:24,332 INFO L87 Difference]: Start difference. First operand 1461 states and 1822 transitions. Second operand 12 states. [2020-09-25 13:29:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:28,810 INFO L93 Difference]: Finished difference Result 3722 states and 4884 transitions. [2020-09-25 13:29:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:29:28,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 215 [2020-09-25 13:29:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:28,823 INFO L225 Difference]: With dead ends: 3722 [2020-09-25 13:29:28,823 INFO L226 Difference]: Without dead ends: 1725 [2020-09-25 13:29:28,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:29:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2020-09-25 13:29:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1430. [2020-09-25 13:29:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-09-25 13:29:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1738 transitions. [2020-09-25 13:29:28,885 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1738 transitions. Word has length 215 [2020-09-25 13:29:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:28,886 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1738 transitions. [2020-09-25 13:29:28,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:29:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1738 transitions. [2020-09-25 13:29:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 13:29:28,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:28,893 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, 1, 1, 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 13:29:28,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:28,894 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:28,894 INFO L82 PathProgramCache]: Analyzing trace with hash 609363603, now seen corresponding path program 1 times [2020-09-25 13:29:28,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:28,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991668266] [2020-09-25 13:29:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:33,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 13:29:33,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:33,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:29:33,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:33,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:33,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:29:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:29:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-25 13:29:33,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:34,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:34,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:34,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:34,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:34,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:29:34,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:34,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:34,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:34,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:34,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:29:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:29:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:34,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:29:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:29:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 13:29:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 13:29:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:34,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:29:34,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 13:29:34,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:34,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 13:29:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 54 proven. 72 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:29:35,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991668266] [2020-09-25 13:29:35,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:35,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:29:35,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603518810] [2020-09-25 13:29:35,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:29:35,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:35,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:29:35,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:29:35,202 INFO L87 Difference]: Start difference. First operand 1430 states and 1738 transitions. Second operand 13 states. [2020-09-25 13:29:36,528 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-09-25 13:29:41,556 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74