/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:28,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:28,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:28,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:28,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:28,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:28,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:28,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:28,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:28,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:28,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:28,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:28,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:28,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:28,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:28,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:28,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:28,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:28,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:28,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:28,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:28,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:28,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:28,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:28,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:28,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:28,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:28,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:28,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:28,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:28,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:28,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:28,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:28,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:28,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:28,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:28,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:28,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:28,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:28,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:28,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:28,669 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 04:25:28,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:28,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:28,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:28,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:28,696 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:28,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:28,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:28,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:28,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:28,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:28,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:28,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:28,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:28,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:28,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:28,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:28,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:28,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:28,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:28,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:28,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:28,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:28,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:28,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:28,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:28,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:28,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:28,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:28,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:28,701 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:25:29,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:29,174 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:29,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:29,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:29,184 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:29,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 04:25:29,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5702e6334/0277d1b6b1014983868d6b781fd5af97/FLAG79d80e586 [2020-09-25 04:25:29,941 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:29,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 04:25:29,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5702e6334/0277d1b6b1014983868d6b781fd5af97/FLAG79d80e586 [2020-09-25 04:25:30,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5702e6334/0277d1b6b1014983868d6b781fd5af97 [2020-09-25 04:25:30,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:30,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:30,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:30,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:30,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:30,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:30" (1/1) ... [2020-09-25 04:25:30,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bef0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:30, skipping insertion in model container [2020-09-25 04:25:30,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:30" (1/1) ... [2020-09-25 04:25:30,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:30,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:30,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:30,903 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:31,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:31,058 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:31,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31 WrapperNode [2020-09-25 04:25:31,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:31,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:31,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:31,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:31,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:31,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:31,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:31,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:31,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (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 04:25:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:32,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:32,569 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:32,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:32 BoogieIcfgContainer [2020-09-25 04:25:32,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:32,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:32,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:32,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:32,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:30" (1/3) ... [2020-09-25 04:25:32,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609716d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:32, skipping insertion in model container [2020-09-25 04:25:32,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31" (2/3) ... [2020-09-25 04:25:32,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609716d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:32, skipping insertion in model container [2020-09-25 04:25:32,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:32" (3/3) ... [2020-09-25 04:25:32,597 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-25 04:25:32,608 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:32,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:32,644 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:32,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:32,675 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:32,675 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:32,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:32,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:32,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:32,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:32,676 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 04:25:32,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:32,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:32,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:32,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-25 04:25:32,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:32,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379811109] [2020-09-25 04:25:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:36,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:37,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:37,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 04:25:37,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:25:37,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:37,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:37,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:37,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 04:25:37,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:25:38,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:38,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:25:38,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:38,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:25:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:38,271 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 04:25:38,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379811109] [2020-09-25 04:25:38,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:38,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:38,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072706606] [2020-09-25 04:25:38,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:38,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:38,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:38,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:38,305 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:40,334 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:25:40,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:40,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 04:25:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:40,361 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:25:40,361 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:25:40,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:25:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:25:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:25:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:25:40,480 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 110 [2020-09-25 04:25:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:40,481 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:25:40,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:25:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 04:25:40,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:40,490 INFO L422 BasicCegarLoop]: trace histogram [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 04:25:40,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:40,491 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:40,491 INFO L82 PathProgramCache]: Analyzing trace with hash -431161361, now seen corresponding path program 1 times [2020-09-25 04:25:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:40,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410782260] [2020-09-25 04:25:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:45,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:45,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:45,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:25:45,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:25:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:25:45,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:45,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:45,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:25:45,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:25:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:45,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:45,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:25:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:45,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:45,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:45,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:45,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:45,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:25:45,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:45,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:25:45,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:45,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410782260] [2020-09-25 04:25:45,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:45,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:25:45,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327347141] [2020-09-25 04:25:45,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:25:45,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:45,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:25:45,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:45,864 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-25 04:25:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:48,591 INFO L93 Difference]: Finished difference Result 1877 states and 2385 transitions. [2020-09-25 04:25:48,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:25:48,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-09-25 04:25:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:48,607 INFO L225 Difference]: With dead ends: 1877 [2020-09-25 04:25:48,607 INFO L226 Difference]: Without dead ends: 1298 [2020-09-25 04:25:48,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:25:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2020-09-25 04:25:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1034. [2020-09-25 04:25:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-25 04:25:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1310 transitions. [2020-09-25 04:25:48,701 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1310 transitions. Word has length 131 [2020-09-25 04:25:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:48,702 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1310 transitions. [2020-09-25 04:25:48,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:25:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1310 transitions. [2020-09-25 04:25:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:25:48,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:48,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:48,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:48,711 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash 39430160, now seen corresponding path program 1 times [2020-09-25 04:25:48,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:48,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988971981] [2020-09-25 04:25:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:53,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:25:53,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:25:53,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:25:53,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:53,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 04:25:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:25:53,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:53,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:53,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:25:53,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:53,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:53,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:53,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:25:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:25:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:54,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:54,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988971981] [2020-09-25 04:25:54,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:54,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:54,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813147913] [2020-09-25 04:25:54,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:54,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:54,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:54,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:54,064 INFO L87 Difference]: Start difference. First operand 1034 states and 1310 transitions. Second operand 5 states. [2020-09-25 04:25:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:55,986 INFO L93 Difference]: Finished difference Result 2483 states and 3245 transitions. [2020-09-25 04:25:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:55,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 04:25:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:55,993 INFO L225 Difference]: With dead ends: 2483 [2020-09-25 04:25:55,994 INFO L226 Difference]: Without dead ends: 998 [2020-09-25 04:25:56,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-09-25 04:25:56,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 988. [2020-09-25 04:25:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-09-25 04:25:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1231 transitions. [2020-09-25 04:25:56,043 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1231 transitions. Word has length 140 [2020-09-25 04:25:56,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:56,044 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1231 transitions. [2020-09-25 04:25:56,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1231 transitions. [2020-09-25 04:25:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 04:25:56,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:56,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:56,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:56,050 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:56,051 INFO L82 PathProgramCache]: Analyzing trace with hash -439956008, now seen corresponding path program 1 times [2020-09-25 04:25:56,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:56,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154407849] [2020-09-25 04:25:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 04:26:01,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:26:01,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:26:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 04:26:01,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:01,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:26:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:26:01,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:01,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:26:01,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:26:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:01,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154407849] [2020-09-25 04:26:01,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:01,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:01,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815971172] [2020-09-25 04:26:01,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:01,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:01,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:01,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:01,334 INFO L87 Difference]: Start difference. First operand 988 states and 1231 transitions. Second operand 5 states. [2020-09-25 04:26:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:03,051 INFO L93 Difference]: Finished difference Result 2684 states and 3490 transitions. [2020-09-25 04:26:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:03,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 04:26:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:03,062 INFO L225 Difference]: With dead ends: 2684 [2020-09-25 04:26:03,062 INFO L226 Difference]: Without dead ends: 1720 [2020-09-25 04:26:03,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-09-25 04:26:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1276. [2020-09-25 04:26:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-25 04:26:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1571 transitions. [2020-09-25 04:26:03,111 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1571 transitions. Word has length 147 [2020-09-25 04:26:03,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:03,111 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1571 transitions. [2020-09-25 04:26:03,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1571 transitions. [2020-09-25 04:26:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 04:26:03,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:03,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:03,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:03,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:03,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:03,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1709240601, now seen corresponding path program 1 times [2020-09-25 04:26:03,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:03,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407701220] [2020-09-25 04:26:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 04:26:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:26:08,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:08,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 04:26:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:26:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:08,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:08,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:08,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:26:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:08,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:08,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:08,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:26:08,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:08,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:26:08,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:08,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:26:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:26:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:08,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407701220] [2020-09-25 04:26:08,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:08,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:08,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111637992] [2020-09-25 04:26:08,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:08,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:08,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:08,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:08,426 INFO L87 Difference]: Start difference. First operand 1276 states and 1571 transitions. Second operand 5 states. [2020-09-25 04:26:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:10,077 INFO L93 Difference]: Finished difference Result 3123 states and 3938 transitions. [2020-09-25 04:26:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:10,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 04:26:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:10,092 INFO L225 Difference]: With dead ends: 3123 [2020-09-25 04:26:10,092 INFO L226 Difference]: Without dead ends: 1871 [2020-09-25 04:26:10,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:10,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-09-25 04:26:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1848. [2020-09-25 04:26:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1848 states. [2020-09-25 04:26:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2251 transitions. [2020-09-25 04:26:10,149 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2251 transitions. Word has length 153 [2020-09-25 04:26:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:10,149 INFO L479 AbstractCegarLoop]: Abstraction has 1848 states and 2251 transitions. [2020-09-25 04:26:10,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2251 transitions. [2020-09-25 04:26:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:26:10,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:10,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:10,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:10,156 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:10,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:10,157 INFO L82 PathProgramCache]: Analyzing trace with hash 926609686, now seen corresponding path program 1 times [2020-09-25 04:26:10,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:10,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851159529] [2020-09-25 04:26:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:15,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:26:15,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:26:15,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:15,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:26:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:26:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:26:15,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:15,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:15,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:15,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:26:15,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:15,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:26:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:26:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:15,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:15,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 04:26:15,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 04:26:15,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:15,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 04:26:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:15,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851159529] [2020-09-25 04:26:15,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:15,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:26:15,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777810314] [2020-09-25 04:26:15,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:15,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:15,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:15,571 INFO L87 Difference]: Start difference. First operand 1848 states and 2251 transitions. Second operand 8 states. [2020-09-25 04:26:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:18,163 INFO L93 Difference]: Finished difference Result 4516 states and 5533 transitions. [2020-09-25 04:26:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:26:18,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2020-09-25 04:26:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:18,177 INFO L225 Difference]: With dead ends: 4516 [2020-09-25 04:26:18,177 INFO L226 Difference]: Without dead ends: 2692 [2020-09-25 04:26:18,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:26:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-09-25 04:26:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2478. [2020-09-25 04:26:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2478 states. [2020-09-25 04:26:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3004 transitions. [2020-09-25 04:26:18,266 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3004 transitions. Word has length 176 [2020-09-25 04:26:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:18,267 INFO L479 AbstractCegarLoop]: Abstraction has 2478 states and 3004 transitions. [2020-09-25 04:26:18,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3004 transitions. [2020-09-25 04:26:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 04:26:18,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:18,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:26:18,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:26:18,278 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:18,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1183044455, now seen corresponding path program 1 times [2020-09-25 04:26:18,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:18,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704422571] [2020-09-25 04:26:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking...