/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=WIDEST --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/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:23:30,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:23:30,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:23:30,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:23:30,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:23:30,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:23:30,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:23:30,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:23:30,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:23:30,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:23:30,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:23:30,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:23:30,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:23:30,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:23:30,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:23:30,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:23:30,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:23:30,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:23:30,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:23:30,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:23:30,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:23:30,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:23:30,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:23:30,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:23:30,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:23:30,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:23:30,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:23:30,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:23:30,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:23:30,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:23:30,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:23:30,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:23:30,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:23:30,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:23:30,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:23:30,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:23:30,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:23:30,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:23:30,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:23:30,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:23:30,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:23:30,680 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 03:23:30,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:23:30,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:23:30,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:23:30,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:23:30,732 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:23:30,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:23:30,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:23:30,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:23:30,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:23:30,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:23:30,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:23:30,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:23:30,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:23:30,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:23:30,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:23:30,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:23:30,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:23:30,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:23:30,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:23:30,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:23:30,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:23:30,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:23:30,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:23:30,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:23:30,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:23:30,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:23:30,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:23:30,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:23:30,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:23:30,738 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:23:31,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:23:31,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:23:31,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:23:31,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:23:31,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:23:31,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 03:23:31,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef3e6779/0cc8d56ebe8a459d93f246c1d85096ad/FLAGbbda7aea1 [2020-09-25 03:23:32,029 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:23:32,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 03:23:32,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef3e6779/0cc8d56ebe8a459d93f246c1d85096ad/FLAGbbda7aea1 [2020-09-25 03:23:32,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef3e6779/0cc8d56ebe8a459d93f246c1d85096ad [2020-09-25 03:23:32,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:23:32,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:23:32,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:23:32,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:23:32,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:23:32,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:32" (1/1) ... [2020-09-25 03:23:32,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73111a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:32, skipping insertion in model container [2020-09-25 03:23:32,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:23:32" (1/1) ... [2020-09-25 03:23:32,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:23:32,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:23:32,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:23:32,877 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:23:33,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:23:33,201 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:23:33,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33 WrapperNode [2020-09-25 03:23:33,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:23:33,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:23:33,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:23:33,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:23:33,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (1/1) ... [2020-09-25 03:23:33,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (1/1) ... [2020-09-25 03:23:33,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (1/1) ... [2020-09-25 03:23:33,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (1/1) ... [2020-09-25 03:23:33,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (1/1) ... [2020-09-25 03:23:33,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (1/1) ... [2020-09-25 03:23:33,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (1/1) ... [2020-09-25 03:23:33,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:23:33,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:23:33,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:23:33,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:23:33,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (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 03:23:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:23:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:23:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 03:23:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:23:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 03:23:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:23:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:23:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:23:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:23:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:23:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:23:35,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:23:35,594 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:23:35,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:35 BoogieIcfgContainer [2020-09-25 03:23:35,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:23:35,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:23:35,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:23:35,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:23:35,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:23:32" (1/3) ... [2020-09-25 03:23:35,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8222c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:35, skipping insertion in model container [2020-09-25 03:23:35,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:23:33" (2/3) ... [2020-09-25 03:23:35,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8222c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:23:35, skipping insertion in model container [2020-09-25 03:23:35,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:23:35" (3/3) ... [2020-09-25 03:23:35,615 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 03:23:35,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:23:35,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:23:35,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:23:35,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:23:35,698 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:23:35,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:23:35,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:23:35,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:23:35,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:23:35,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:23:35,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:23:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 03:23:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:23:35,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:35,770 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] [2020-09-25 03:23:35,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:35,779 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 03:23:35,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:35,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592276376] [2020-09-25 03:23:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:23:37,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:23:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-25 03:23:37,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:23:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:23:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 03:23:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 03:23:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:37,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:37,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:37,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:23:37,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:37,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:23:37,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:37,290 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 03:23:37,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592276376] [2020-09-25 03:23:37,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:37,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:23:37,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845153032] [2020-09-25 03:23:37,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:23:37,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:37,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:23:37,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:23:37,325 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 03:23:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:41,671 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 03:23:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:23:41,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 03:23:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:41,705 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 03:23:41,705 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 03:23:41,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:23:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 03:23:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 03:23:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 03:23:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 03:23:41,841 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 69 [2020-09-25 03:23:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:41,842 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 03:23:41,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:23:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 03:23:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 03:23:41,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:41,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:41,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:23:41,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:41,855 INFO L82 PathProgramCache]: Analyzing trace with hash -112077510, now seen corresponding path program 1 times [2020-09-25 03:23:41,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:41,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552442089] [2020-09-25 03:23:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:42,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:43,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:46,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:46,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 03:23:46,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:23:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4660 [2020-09-25 03:23:46,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:23:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:23:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 03:23:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:46,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:46,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:46,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:23:46,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:23:46,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:46,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:23:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:46,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:46,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 03:23:46,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:23:46,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 03:23:46,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:23:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:23:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 03:23:46,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:23:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:23:47,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552442089] [2020-09-25 03:23:47,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:23:47,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:23:47,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734273110] [2020-09-25 03:23:47,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:23:47,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:47,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:23:47,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:23:47,239 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 8 states. [2020-09-25 03:23:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:23:51,570 INFO L93 Difference]: Finished difference Result 1556 states and 2015 transitions. [2020-09-25 03:23:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:23:51,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2020-09-25 03:23:51,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:23:51,585 INFO L225 Difference]: With dead ends: 1556 [2020-09-25 03:23:51,585 INFO L226 Difference]: Without dead ends: 1554 [2020-09-25 03:23:51,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:23:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-09-25 03:23:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1188. [2020-09-25 03:23:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-25 03:23:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1548 transitions. [2020-09-25 03:23:51,701 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1548 transitions. Word has length 156 [2020-09-25 03:23:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:23:51,706 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1548 transitions. [2020-09-25 03:23:51,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:23:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1548 transitions. [2020-09-25 03:23:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 03:23:51,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:23:51,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:51,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:23:51,719 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:23:51,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:23:51,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1811384198, now seen corresponding path program 1 times [2020-09-25 03:23:51,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:23:51,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103421261] [2020-09-25 03:23:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:23:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:56,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:56,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 03:23:56,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:23:56,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 03:23:56,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:23:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:23:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 03:23:56,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:23:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:23:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:23:56,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:23:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:23:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:23:56,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:23:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:23:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:23:57,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:23:57,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 03:23:57,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:23:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 03:23:57,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:23:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:23:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:23:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 03:23:57,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:23:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:23:57,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103421261] [2020-09-25 03:23:57,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:23:57,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:23:57,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83634441] [2020-09-25 03:23:57,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:23:57,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:23:57,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:23:57,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:23:57,218 INFO L87 Difference]: Start difference. First operand 1188 states and 1548 transitions. Second operand 7 states. [2020-09-25 03:24:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:24:00,507 INFO L93 Difference]: Finished difference Result 3211 states and 4397 transitions. [2020-09-25 03:24:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:24:00,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 03:24:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:24:00,524 INFO L225 Difference]: With dead ends: 3211 [2020-09-25 03:24:00,524 INFO L226 Difference]: Without dead ends: 2038 [2020-09-25 03:24:00,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:24:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2020-09-25 03:24:00,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1777. [2020-09-25 03:24:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1777 states. [2020-09-25 03:24:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2285 transitions. [2020-09-25 03:24:00,605 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2285 transitions. Word has length 171 [2020-09-25 03:24:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:24:00,607 INFO L479 AbstractCegarLoop]: Abstraction has 1777 states and 2285 transitions. [2020-09-25 03:24:00,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:24:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2285 transitions. [2020-09-25 03:24:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 03:24:00,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:24:00,613 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, 2, 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] [2020-09-25 03:24:00,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:24:00,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:24:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:24:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash 107700592, now seen corresponding path program 1 times [2020-09-25 03:24:00,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:24:00,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563628767] [2020-09-25 03:24:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:24:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:00,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:05,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:05,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 03:24:05,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:24:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 03:24:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:24:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:24:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-25 03:24:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:24:05,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:24:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:05,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:24:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:24:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:24:05,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:24:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:24:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:24:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:24:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:24:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:05,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:05,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:24:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:24:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 03:24:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:24:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:24:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 03:24:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:24:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 03:24:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:06,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:06,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:24:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:24:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 03:24:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:24:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:24:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 03:24:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:24:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:24:06,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563628767] [2020-09-25 03:24:06,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:24:06,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:24:06,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447755446] [2020-09-25 03:24:06,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:24:06,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:24:06,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:24:06,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:24:06,651 INFO L87 Difference]: Start difference. First operand 1777 states and 2285 transitions. Second operand 10 states. [2020-09-25 03:24:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:24:11,924 INFO L93 Difference]: Finished difference Result 4473 states and 6020 transitions. [2020-09-25 03:24:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 03:24:11,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 245 [2020-09-25 03:24:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:24:11,935 INFO L225 Difference]: With dead ends: 4473 [2020-09-25 03:24:11,936 INFO L226 Difference]: Without dead ends: 1829 [2020-09-25 03:24:11,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:24:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-09-25 03:24:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1510. [2020-09-25 03:24:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1510 states. [2020-09-25 03:24:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 1695 transitions. [2020-09-25 03:24:11,999 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 1695 transitions. Word has length 245 [2020-09-25 03:24:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:24:11,999 INFO L479 AbstractCegarLoop]: Abstraction has 1510 states and 1695 transitions. [2020-09-25 03:24:11,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:24:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 1695 transitions. [2020-09-25 03:24:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 03:24:12,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:24:12,011 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 03:24:12,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:24:12,012 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:24:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:24:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1315602251, now seen corresponding path program 1 times [2020-09-25 03:24:12,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:24:12,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459173288] [2020-09-25 03:24:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:24:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:17,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:17,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-09-25 03:24:17,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:24:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 03:24:17,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:24:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:24:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-09-25 03:24:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:24:17,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:24:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:17,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:17,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:24:17,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:24:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:24:17,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:24:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:24:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:24:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:24:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:24:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:17,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:17,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 03:24:17,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:24:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 03:24:17,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:24:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:24:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 03:24:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:24:17,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 03:24:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:17,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:17,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:17,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 03:24:17,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:24:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 03:24:17,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:17,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:24:17,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:24:17,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 03:24:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:24:18,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-25 03:24:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:24:18,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:24:18,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:24:18,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:24:18,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 03:24:18,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:24:18,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:24:18,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 03:24:18,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:24:18,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:24:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 172 proven. 152 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-09-25 03:24:18,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459173288] [2020-09-25 03:24:18,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:24:18,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:24:18,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830733419] [2020-09-25 03:24:18,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:24:18,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:24:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:24:18,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:24:18,431 INFO L87 Difference]: Start difference. First operand 1510 states and 1695 transitions. Second operand 7 states. [2020-09-25 03:24:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:24:20,492 INFO L93 Difference]: Finished difference Result 3804 states and 4329 transitions. [2020-09-25 03:24:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:24:20,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-09-25 03:24:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:24:20,505 INFO L225 Difference]: With dead ends: 3804 [2020-09-25 03:24:20,505 INFO L226 Difference]: Without dead ends: 2309 [2020-09-25 03:24:20,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:24:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2020-09-25 03:24:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2282. [2020-09-25 03:24:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-09-25 03:24:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2519 transitions. [2020-09-25 03:24:20,582 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2519 transitions. Word has length 465 [2020-09-25 03:24:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:24:20,583 INFO L479 AbstractCegarLoop]: Abstraction has 2282 states and 2519 transitions. [2020-09-25 03:24:20,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:24:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2519 transitions. [2020-09-25 03:24:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-09-25 03:24:20,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:24:20,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:20,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:24:20,605 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:24:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:24:20,606 INFO L82 PathProgramCache]: Analyzing trace with hash -311556737, now seen corresponding path program 1 times [2020-09-25 03:24:20,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:24:20,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468747128] [2020-09-25 03:24:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:24:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:24:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking...