/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:07,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:07,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:07,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:07,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:07,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:07,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:07,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:07,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:07,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:07,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:07,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:07,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:07,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:07,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:07,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:07,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:07,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:07,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:07,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:07,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:07,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:07,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:07,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:07,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:07,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:07,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:07,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:07,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:07,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:07,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:07,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:07,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:07,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:07,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:07,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:07,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:07,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:07,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:07,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:07,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:07,616 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 06:48:07,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:07,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:07,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:07,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:07,654 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:07,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:07,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:07,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:07,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:07,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:07,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:07,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:07,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:07,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:07,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:07,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:07,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:07,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:07,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:07,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:07,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:07,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:07,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:07,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:07,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:07,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:07,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:07,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:07,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:07,659 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:48:08,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:08,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:08,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:08,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:08,133 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:08,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 06:48:08,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1023debee/c017ac63c3e64c5792f2853def48b412/FLAG842192a57 [2020-09-25 06:48:08,850 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:08,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 06:48:08,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1023debee/c017ac63c3e64c5792f2853def48b412/FLAG842192a57 [2020-09-25 06:48:09,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1023debee/c017ac63c3e64c5792f2853def48b412 [2020-09-25 06:48:09,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:09,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:09,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:09,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:09,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:09,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:09,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09, skipping insertion in model container [2020-09-25 06:48:09,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:09,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:09,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:09,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:09,717 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:09,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:09,962 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:09,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09 WrapperNode [2020-09-25 06:48:09,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:09,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:09,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:09,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:09,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:09,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:10,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:10,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:10,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:10,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:10,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (1/1) ... [2020-09-25 06:48:10,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:10,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:10,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:10,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:10,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (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 06:48:10,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:10,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:10,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:10,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:11,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:11,664 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:11,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:11 BoogieIcfgContainer [2020-09-25 06:48:11,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:11,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:11,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:11,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:11,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:09" (1/3) ... [2020-09-25 06:48:11,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:11, skipping insertion in model container [2020-09-25 06:48:11,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:09" (2/3) ... [2020-09-25 06:48:11,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:11, skipping insertion in model container [2020-09-25 06:48:11,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:11" (3/3) ... [2020-09-25 06:48:11,686 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 06:48:11,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:11,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:11,740 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:11,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:11,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:11,781 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:11,781 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:11,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:11,781 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:11,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:11,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:48:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 06:48:11,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:11,832 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] [2020-09-25 06:48:11,833 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:11,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:11,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 06:48:11,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:11,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 06:48:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:12,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:12,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:12,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-09-25 06:48:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:12,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:48:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:13,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:13,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:48:13,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:13,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:13,100 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 06:48:13,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 06:48:13,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:13,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:48:13,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733410808] [2020-09-25 06:48:13,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:48:13,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:13,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:48:13,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:48:13,134 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:48:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:15,091 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 06:48:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:48:15,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 06:48:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:15,118 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 06:48:15,118 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 06:48:15,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:15,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 06:48:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 06:48:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 06:48:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 06:48:15,247 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 06:48:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:15,248 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 06:48:15,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:48:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 06:48:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 06:48:15,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:15,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:15,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:15,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:15,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 06:48:15,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:15,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501612625] [2020-09-25 06:48:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 06:48:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2287 [2020-09-25 06:48:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:17,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:48:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:17,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:17,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:48:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:17,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:17,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:48:17,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:17,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 06:48:17,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:17,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:17,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:17,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501612625] [2020-09-25 06:48:17,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:17,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:17,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354319719] [2020-09-25 06:48:17,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:17,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:17,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:17,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:17,963 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 06:48:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:20,632 INFO L93 Difference]: Finished difference Result 1503 states and 1930 transitions. [2020-09-25 06:48:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:20,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 06:48:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:20,640 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 06:48:20,640 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 06:48:20,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 06:48:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2020-09-25 06:48:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-25 06:48:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1129 transitions. [2020-09-25 06:48:20,696 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1129 transitions. Word has length 156 [2020-09-25 06:48:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:20,697 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1129 transitions. [2020-09-25 06:48:20,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1129 transitions. [2020-09-25 06:48:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:48:20,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:20,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:20,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:20,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 06:48:20,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:20,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004397136] [2020-09-25 06:48:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:22,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:25,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:48:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:48:25,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:25,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:48:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:48:25,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:25,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:25,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:25,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:48:25,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:25,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:26,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:26,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 06:48:26,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:26,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:26,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004397136] [2020-09-25 06:48:26,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:26,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:48:26,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241520373] [2020-09-25 06:48:26,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:48:26,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:26,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:48:26,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:48:26,143 INFO L87 Difference]: Start difference. First operand 892 states and 1129 transitions. Second operand 6 states. [2020-09-25 06:48:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:28,936 INFO L93 Difference]: Finished difference Result 2776 states and 3717 transitions. [2020-09-25 06:48:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:48:28,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 06:48:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:28,958 INFO L225 Difference]: With dead ends: 2776 [2020-09-25 06:48:28,958 INFO L226 Difference]: Without dead ends: 1899 [2020-09-25 06:48:28,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 06:48:28,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-09-25 06:48:29,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1828. [2020-09-25 06:48:29,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-09-25 06:48:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2437 transitions. [2020-09-25 06:48:29,073 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2437 transitions. Word has length 165 [2020-09-25 06:48:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:29,078 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2437 transitions. [2020-09-25 06:48:29,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:48:29,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2437 transitions. [2020-09-25 06:48:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 06:48:29,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:29,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:29,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:29,096 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:29,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1256012571, now seen corresponding path program 1 times [2020-09-25 06:48:29,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:29,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524514568] [2020-09-25 06:48:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:32,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 06:48:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:48:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3401 [2020-09-25 06:48:32,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:48:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:48:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:32,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:32,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:48:32,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:32,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 06:48:32,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:32,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:32,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524514568] [2020-09-25 06:48:32,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:32,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:32,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621159012] [2020-09-25 06:48:32,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:32,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:32,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:32,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:32,909 INFO L87 Difference]: Start difference. First operand 1828 states and 2437 transitions. Second operand 7 states. [2020-09-25 06:48:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:35,453 INFO L93 Difference]: Finished difference Result 4961 states and 6987 transitions. [2020-09-25 06:48:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:35,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 06:48:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:35,476 INFO L225 Difference]: With dead ends: 4961 [2020-09-25 06:48:35,476 INFO L226 Difference]: Without dead ends: 3148 [2020-09-25 06:48:35,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2020-09-25 06:48:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 2628. [2020-09-25 06:48:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-09-25 06:48:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3444 transitions. [2020-09-25 06:48:35,598 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3444 transitions. Word has length 167 [2020-09-25 06:48:35,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:35,598 INFO L479 AbstractCegarLoop]: Abstraction has 2628 states and 3444 transitions. [2020-09-25 06:48:35,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3444 transitions. [2020-09-25 06:48:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 06:48:35,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:35,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:35,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:35,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:35,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-25 06:48:35,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:35,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35925493] [2020-09-25 06:48:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:40,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:40,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 06:48:40,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:48:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 06:48:40,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:40,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:48:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:40,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:40,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:40,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:48:40,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:40,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:40,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:41,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:41,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:41,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 06:48:41,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:41,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:48:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:41,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:41,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:41,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:41,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 06:48:41,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:41,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:41,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:41,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35925493] [2020-09-25 06:48:41,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:41,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:48:41,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658503350] [2020-09-25 06:48:41,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:48:41,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:41,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:48:41,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:48:41,496 INFO L87 Difference]: Start difference. First operand 2628 states and 3444 transitions. Second operand 9 states. [2020-09-25 06:48:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:45,623 INFO L93 Difference]: Finished difference Result 5932 states and 7765 transitions. [2020-09-25 06:48:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 06:48:45,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 06:48:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:45,645 INFO L225 Difference]: With dead ends: 5932 [2020-09-25 06:48:45,645 INFO L226 Difference]: Without dead ends: 3469 [2020-09-25 06:48:45,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:48:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-09-25 06:48:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 2948. [2020-09-25 06:48:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2948 states. [2020-09-25 06:48:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 3809 transitions. [2020-09-25 06:48:45,767 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 3809 transitions. Word has length 248 [2020-09-25 06:48:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:45,768 INFO L479 AbstractCegarLoop]: Abstraction has 2948 states and 3809 transitions. [2020-09-25 06:48:45,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:48:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 3809 transitions. [2020-09-25 06:48:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 06:48:45,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:45,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:45,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:45,776 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:45,777 INFO L82 PathProgramCache]: Analyzing trace with hash -2088566381, now seen corresponding path program 1 times [2020-09-25 06:48:45,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:45,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224016243] [2020-09-25 06:48:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:46,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:50,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:50,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 06:48:50,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 06:48:50,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:50,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 06:48:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:50,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:50,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:50,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:50,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:48:50,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:50,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:51,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:51,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:51,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 06:48:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:51,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:51,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:51,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:48:51,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 06:48:51,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:51,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:48:51,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:51,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224016243] [2020-09-25 06:48:51,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:51,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:48:51,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570141927] [2020-09-25 06:48:51,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:48:51,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:51,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:48:51,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:51,605 INFO L87 Difference]: Start difference. First operand 2948 states and 3809 transitions. Second operand 8 states. [2020-09-25 06:48:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:54,329 INFO L93 Difference]: Finished difference Result 6801 states and 9010 transitions. [2020-09-25 06:48:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:48:54,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-09-25 06:48:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:54,350 INFO L225 Difference]: With dead ends: 6801 [2020-09-25 06:48:54,350 INFO L226 Difference]: Without dead ends: 3372 [2020-09-25 06:48:54,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:48:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2020-09-25 06:48:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 2456. [2020-09-25 06:48:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2020-09-25 06:48:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 2825 transitions. [2020-09-25 06:48:54,442 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 2825 transitions. Word has length 259 [2020-09-25 06:48:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:54,442 INFO L479 AbstractCegarLoop]: Abstraction has 2456 states and 2825 transitions. [2020-09-25 06:48:54,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:48:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 2825 transitions. [2020-09-25 06:48:54,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 06:48:54,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:54,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:54,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:54,451 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:54,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:54,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1264284997, now seen corresponding path program 1 times [2020-09-25 06:48:54,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:54,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232299973] [2020-09-25 06:48:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking...