/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:56,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:56,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:56,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:56,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:56,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:56,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:56,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:56,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:56,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:56,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:56,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:56,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:56,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:56,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:56,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:56,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:56,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:56,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:56,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:56,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:56,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:56,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:56,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:56,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:56,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:56,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:56,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:56,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:56,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:56,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:56,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:56,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:56,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:56,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:56,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:56,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:56,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:56,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:56,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:56,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:56,656 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 10:12:56,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:56,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:56,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:56,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:56,686 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:56,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:56,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:56,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:56,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:56,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:56,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:56,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:56,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:56,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:56,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:56,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:56,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:56,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:56,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:56,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:56,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:56,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:56,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:56,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:56,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:56,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:56,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:56,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:56,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:56,691 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:12:57,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:57,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:57,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:57,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:57,191 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:57,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 10:12:57,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/746c09364/c5dee03ee3674eaba3e38e40dfe033f0/FLAG4ba6d1f3f [2020-09-25 10:12:57,989 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:57,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 10:12:58,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/746c09364/c5dee03ee3674eaba3e38e40dfe033f0/FLAG4ba6d1f3f [2020-09-25 10:12:58,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/746c09364/c5dee03ee3674eaba3e38e40dfe033f0 [2020-09-25 10:12:58,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:58,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:58,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:58,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:58,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:58,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:58" (1/1) ... [2020-09-25 10:12:58,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:58, skipping insertion in model container [2020-09-25 10:12:58,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:58" (1/1) ... [2020-09-25 10:12:58,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:58,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:58,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:58,841 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:59,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:59,079 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:59,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59 WrapperNode [2020-09-25 10:12:59,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:59,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:59,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:59,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:59,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (1/1) ... [2020-09-25 10:12:59,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (1/1) ... [2020-09-25 10:12:59,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (1/1) ... [2020-09-25 10:12:59,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (1/1) ... [2020-09-25 10:12:59,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (1/1) ... [2020-09-25 10:12:59,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (1/1) ... [2020-09-25 10:12:59,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (1/1) ... [2020-09-25 10:12:59,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:59,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:59,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:59,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:59,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (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 10:12:59,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:59,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:59,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:59,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:59,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:00,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:00,844 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:00,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:00 BoogieIcfgContainer [2020-09-25 10:13:00,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:00,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:00,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:00,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:00,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:58" (1/3) ... [2020-09-25 10:13:00,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b2fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:00, skipping insertion in model container [2020-09-25 10:13:00,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:59" (2/3) ... [2020-09-25 10:13:00,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b2fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:00, skipping insertion in model container [2020-09-25 10:13:00,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:00" (3/3) ... [2020-09-25 10:13:00,869 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-25 10:13:00,881 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:00,893 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:00,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:00,953 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:00,953 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:00,953 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:00,953 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:00,954 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:00,954 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:00,954 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:00,954 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:00,987 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:13:00,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 10:13:00,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:00,998 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] [2020-09-25 10:13:00,999 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:01,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:01,007 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-25 10:13:01,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:01,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590105355] [2020-09-25 10:13:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:01,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 10:13:01,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:01,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-25 10:13:01,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:01,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:01,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:13:01,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:13:01,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:01,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:01,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:01,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:01,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:13:01,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:01,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:02,000 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 10:13:02,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590105355] [2020-09-25 10:13:02,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:02,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:02,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966868945] [2020-09-25 10:13:02,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:02,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:02,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:02,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:02,036 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:13:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:04,242 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 10:13:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:04,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 10:13:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:04,277 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 10:13:04,277 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 10:13:04,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 10:13:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 10:13:04,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 10:13:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 10:13:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 10:13:04,387 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 37 [2020-09-25 10:13:04,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:04,388 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 10:13:04,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:04,389 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 10:13:04,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 10:13:04,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:04,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:04,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:04,396 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:04,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:04,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109808, now seen corresponding path program 1 times [2020-09-25 10:13:04,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:04,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168040703] [2020-09-25 10:13:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:08,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 10:13:08,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:08,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4417 [2020-09-25 10:13:08,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:08,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:08,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:13:08,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:09,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:09,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:09,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:13:09,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:09,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:13:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:09,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 10:13:09,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:09,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:09,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:13:09,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168040703] [2020-09-25 10:13:09,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:09,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:13:09,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226033771] [2020-09-25 10:13:09,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:13:09,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:09,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:13:09,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:13:09,597 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 10:13:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:11,523 INFO L93 Difference]: Finished difference Result 710 states and 906 transitions. [2020-09-25 10:13:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:13:11,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-09-25 10:13:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:11,529 INFO L225 Difference]: With dead ends: 710 [2020-09-25 10:13:11,530 INFO L226 Difference]: Without dead ends: 708 [2020-09-25 10:13:11,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 10:13:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-09-25 10:13:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 696. [2020-09-25 10:13:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 10:13:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 10:13:11,588 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 116 [2020-09-25 10:13:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:11,589 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 10:13:11,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:13:11,590 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 10:13:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 10:13:11,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:11,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:11,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:11,597 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:11,597 INFO L82 PathProgramCache]: Analyzing trace with hash 804111666, now seen corresponding path program 1 times [2020-09-25 10:13:11,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:11,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444233717] [2020-09-25 10:13:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:14,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 10:13:14,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:13:14,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2842 [2020-09-25 10:13:14,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:14,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 10:13:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:14,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:14,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:14,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:13:14,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:14,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:14,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:14,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:14,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:14,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 10:13:14,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:14,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:14,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444233717] [2020-09-25 10:13:14,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:14,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:14,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277088863] [2020-09-25 10:13:14,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:14,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:14,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:14,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:14,923 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 8 states. [2020-09-25 10:13:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:18,247 INFO L93 Difference]: Finished difference Result 1653 states and 2185 transitions. [2020-09-25 10:13:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:18,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-09-25 10:13:18,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:18,256 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 10:13:18,256 INFO L226 Difference]: Without dead ends: 1123 [2020-09-25 10:13:18,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-09-25 10:13:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 890. [2020-09-25 10:13:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-25 10:13:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1119 transitions. [2020-09-25 10:13:18,298 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1119 transitions. Word has length 126 [2020-09-25 10:13:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:18,299 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1119 transitions. [2020-09-25 10:13:18,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1119 transitions. [2020-09-25 10:13:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 10:13:18,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:18,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:18,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:18,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:18,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:18,307 INFO L82 PathProgramCache]: Analyzing trace with hash -844817794, now seen corresponding path program 1 times [2020-09-25 10:13:18,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:18,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950600054] [2020-09-25 10:13:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:21,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:21,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 10:13:21,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3510 [2020-09-25 10:13:21,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:21,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:13:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 10:13:21,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:21,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:21,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:21,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:13:21,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:21,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:22,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:13:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 10:13:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:22,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:13:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 10:13:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:22,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950600054] [2020-09-25 10:13:22,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:22,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:13:22,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135122696] [2020-09-25 10:13:22,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:13:22,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:22,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:13:22,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:22,730 INFO L87 Difference]: Start difference. First operand 890 states and 1119 transitions. Second operand 12 states. [2020-09-25 10:13:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:25,661 INFO L93 Difference]: Finished difference Result 1503 states and 1919 transitions. [2020-09-25 10:13:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:13:25,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-09-25 10:13:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:25,669 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 10:13:25,670 INFO L226 Difference]: Without dead ends: 949 [2020-09-25 10:13:25,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:25,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-25 10:13:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 894. [2020-09-25 10:13:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-09-25 10:13:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1126 transitions. [2020-09-25 10:13:25,720 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1126 transitions. Word has length 145 [2020-09-25 10:13:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:25,721 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1126 transitions. [2020-09-25 10:13:25,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:13:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1126 transitions. [2020-09-25 10:13:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 10:13:25,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:25,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:25,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:25,734 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:25,734 INFO L82 PathProgramCache]: Analyzing trace with hash 490505838, now seen corresponding path program 1 times [2020-09-25 10:13:25,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:25,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306551410] [2020-09-25 10:13:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:29,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 10:13:29,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:29,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4163 [2020-09-25 10:13:29,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:29,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:29,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:13:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:30,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:30,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:13:30,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:30,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:30,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:30,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:13:30,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 10:13:30,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:30,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 10:13:30,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:30,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306551410] [2020-09-25 10:13:30,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:30,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:30,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668187283] [2020-09-25 10:13:30,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:30,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:30,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:30,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:30,847 INFO L87 Difference]: Start difference. First operand 894 states and 1126 transitions. Second operand 9 states. [2020-09-25 10:13:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:34,148 INFO L93 Difference]: Finished difference Result 2416 states and 3210 transitions. [2020-09-25 10:13:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:34,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2020-09-25 10:13:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:34,158 INFO L225 Difference]: With dead ends: 2416 [2020-09-25 10:13:34,159 INFO L226 Difference]: Without dead ends: 1683 [2020-09-25 10:13:34,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-09-25 10:13:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1508. [2020-09-25 10:13:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1508 states. [2020-09-25 10:13:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1887 transitions. [2020-09-25 10:13:34,224 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1887 transitions. Word has length 159 [2020-09-25 10:13:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:34,225 INFO L479 AbstractCegarLoop]: Abstraction has 1508 states and 1887 transitions. [2020-09-25 10:13:34,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:13:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1887 transitions. [2020-09-25 10:13:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 10:13:34,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:34,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:34,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:34,228 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash 614066135, now seen corresponding path program 1 times [2020-09-25 10:13:34,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:34,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930105324] [2020-09-25 10:13:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 10:13:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 10:13:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:39,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:13:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 10:13:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:39,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:39,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:39,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:39,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:13:39,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:39,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 10:13:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-25 10:13:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:39,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:13:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:40,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930105324] [2020-09-25 10:13:40,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:40,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:13:40,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335373415] [2020-09-25 10:13:40,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:13:40,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:13:40,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:40,184 INFO L87 Difference]: Start difference. First operand 1508 states and 1887 transitions. Second operand 12 states. [2020-09-25 10:13:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:45,163 INFO L93 Difference]: Finished difference Result 3120 states and 4052 transitions. [2020-09-25 10:13:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:13:45,164 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 173 [2020-09-25 10:13:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:45,175 INFO L225 Difference]: With dead ends: 3120 [2020-09-25 10:13:45,176 INFO L226 Difference]: Without dead ends: 2104 [2020-09-25 10:13:45,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:13:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2020-09-25 10:13:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2026. [2020-09-25 10:13:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-09-25 10:13:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2570 transitions. [2020-09-25 10:13:45,241 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2570 transitions. Word has length 173 [2020-09-25 10:13:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:45,242 INFO L479 AbstractCegarLoop]: Abstraction has 2026 states and 2570 transitions. [2020-09-25 10:13:45,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:13:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2570 transitions. [2020-09-25 10:13:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 10:13:45,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:45,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:45,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:13:45,247 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash -375587405, now seen corresponding path program 1 times [2020-09-25 10:13:45,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:45,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41188535] [2020-09-25 10:13:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 10:13:46,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-09-25 10:13:46,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 10:13:46,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:46,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:46,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:13:46,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:46,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:46,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking...