/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:14:52,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:14:52,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:14:52,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:14:52,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:14:52,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:14:52,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:14:52,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:14:52,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:14:52,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:14:52,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:14:52,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:14:52,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:14:52,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:14:52,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:14:52,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:14:52,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:14:52,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:14:52,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:14:52,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:14:52,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:14:52,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:14:52,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:14:52,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:14:52,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:14:52,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:14:52,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:14:52,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:14:52,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:14:52,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:14:52,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:14:52,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:14:52,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:14:52,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:14:52,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:14:52,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:14:52,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:14:52,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:14:52,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:14:52,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:14:52,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:14:52,647 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 11:14:52,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:14:52,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:14:52,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:14:52,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:14:52,699 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:14:52,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:14:52,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:14:52,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:14:52,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:14:52,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:14:52,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:14:52,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:14:52,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:14:52,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:14:52,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:14:52,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:14:52,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:14:52,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:14:52,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:14:52,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:14:52,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:14:52,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:52,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:14:52,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:14:52,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:14:52,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:14:52,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:14:52,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:14:52,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:14:52,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:14:53,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:14:53,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:14:53,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:14:53,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:14:53,178 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:14:53,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 11:14:53,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1567698a3/508e626a163f43f0bade5f4a180080f3/FLAG9821c769a [2020-09-25 11:14:53,952 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:14:53,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 11:14:53,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1567698a3/508e626a163f43f0bade5f4a180080f3/FLAG9821c769a [2020-09-25 11:14:54,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1567698a3/508e626a163f43f0bade5f4a180080f3 [2020-09-25 11:14:54,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:14:54,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:14:54,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:54,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:14:54,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:14:54,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:54" (1/1) ... [2020-09-25 11:14:54,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:54, skipping insertion in model container [2020-09-25 11:14:54,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:54" (1/1) ... [2020-09-25 11:14:54,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:14:54,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:14:54,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:54,780 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:14:55,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:55,040 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:14:55,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55 WrapperNode [2020-09-25 11:14:55,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:55,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:14:55,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:14:55,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:14:55,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (1/1) ... [2020-09-25 11:14:55,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (1/1) ... [2020-09-25 11:14:55,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (1/1) ... [2020-09-25 11:14:55,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (1/1) ... [2020-09-25 11:14:55,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (1/1) ... [2020-09-25 11:14:55,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (1/1) ... [2020-09-25 11:14:55,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (1/1) ... [2020-09-25 11:14:55,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:14:55,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:14:55,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:14:55,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:14:55,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (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 11:14:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:14:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:14:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:14:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:14:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:14:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:14:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:14:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:14:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:14:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:14:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:14:56,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:14:56,650 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:14:56,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:56 BoogieIcfgContainer [2020-09-25 11:14:56,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:14:56,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:14:56,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:14:56,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:14:56,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:14:54" (1/3) ... [2020-09-25 11:14:56,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511c3601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:56, skipping insertion in model container [2020-09-25 11:14:56,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:55" (2/3) ... [2020-09-25 11:14:56,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511c3601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:56, skipping insertion in model container [2020-09-25 11:14:56,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:56" (3/3) ... [2020-09-25 11:14:56,678 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 11:14:56,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:14:56,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:14:56,731 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:14:56,769 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:14:56,769 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:14:56,769 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:14:56,769 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:14:56,769 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:14:56,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:14:56,770 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:14:56,770 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:14:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:14:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 11:14:56,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:56,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:56,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 11:14:56,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:56,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714866434] [2020-09-25 11:14:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:02,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 11:15:02,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:15:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 11:15:02,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:02,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:15:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:15:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:15:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:02,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:02,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:02,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 11:15:02,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:02,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:15:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:15:02,610 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 11:15:02,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714866434] [2020-09-25 11:15:02,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:15:02,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:15:02,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168188869] [2020-09-25 11:15:02,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:02,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:02,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:02,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:02,648 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 11:15:04,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:04,782 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 11:15:04,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:15:04,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 11:15:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:04,815 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 11:15:04,815 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 11:15:04,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 11:15:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 11:15:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 11:15:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:15:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 11:15:04,931 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 11:15:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:04,933 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 11:15:04,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 11:15:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 11:15:04,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:04,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:04,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:15:04,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 11:15:04,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:04,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126575089] [2020-09-25 11:15:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:08,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:09,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:09,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 11:15:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:15:09,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:09,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:15:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 11:15:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:10,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:15:10,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:10,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:10,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:15:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:15:10,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:10,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:15:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:10,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126575089] [2020-09-25 11:15:10,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:10,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:10,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226430589] [2020-09-25 11:15:10,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:10,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:10,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:10,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:10,250 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 11:15:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:12,673 INFO L93 Difference]: Finished difference Result 1597 states and 2001 transitions. [2020-09-25 11:15:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:12,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 11:15:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:12,684 INFO L225 Difference]: With dead ends: 1597 [2020-09-25 11:15:12,684 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 11:15:12,688 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 11:15:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 11:15:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 758. [2020-09-25 11:15:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-09-25 11:15:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 933 transitions. [2020-09-25 11:15:12,732 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 933 transitions. Word has length 161 [2020-09-25 11:15:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:12,733 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 933 transitions. [2020-09-25 11:15:12,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 933 transitions. [2020-09-25 11:15:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 11:15:12,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:12,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:12,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:12,739 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:12,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1701451615, now seen corresponding path program 1 times [2020-09-25 11:15:12,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:12,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841374184] [2020-09-25 11:15:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:13,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:17,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 11:15:17,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:15:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 11:15:17,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:17,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 11:15:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:15:17,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:15:17,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:18,741 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-09-25 11:15:19,015 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2020-09-25 11:15:19,499 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 57 [2020-09-25 11:15:19,909 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 56 [2020-09-25 11:15:20,204 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 51 [2020-09-25 11:15:20,539 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 51 [2020-09-25 11:15:21,000 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 50 [2020-09-25 11:15:21,411 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 49 [2020-09-25 11:15:21,755 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 46 [2020-09-25 11:15:22,054 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 43 [2020-09-25 11:15:22,357 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 40 [2020-09-25 11:15:22,748 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2020-09-25 11:15:22,986 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-09-25 11:15:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:23,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:15:23,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:23,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:15:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:15:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:23,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:23,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:23,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:15:23,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:23,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:15:23,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:23,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:15:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:24,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841374184] [2020-09-25 11:15:24,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:24,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 11:15:24,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547600894] [2020-09-25 11:15:24,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 11:15:24,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:24,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 11:15:24,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-09-25 11:15:24,082 INFO L87 Difference]: Start difference. First operand 758 states and 933 transitions. Second operand 26 states. [2020-09-25 11:15:24,448 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-09-25 11:15:25,411 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-09-25 11:15:25,576 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-09-25 11:15:26,497 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-09-25 11:15:26,886 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-09-25 11:15:27,368 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2020-09-25 11:15:27,937 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 124 [2020-09-25 11:15:28,634 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2020-09-25 11:15:29,719 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 119 [2020-09-25 11:15:30,267 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-09-25 11:15:30,922 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 119 [2020-09-25 11:15:31,390 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-25 11:15:32,401 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 117 [2020-09-25 11:15:33,103 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 116 [2020-09-25 11:15:33,485 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-09-25 11:15:34,086 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 113 [2020-09-25 11:15:34,565 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 109 [2020-09-25 11:15:35,100 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-25 11:15:35,581 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2020-09-25 11:15:36,415 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2020-09-25 11:15:36,897 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 101 [2020-09-25 11:15:37,548 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2020-09-25 11:15:39,120 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-09-25 11:15:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:39,365 INFO L93 Difference]: Finished difference Result 3040 states and 4141 transitions. [2020-09-25 11:15:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-25 11:15:39,366 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 176 [2020-09-25 11:15:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:39,389 INFO L225 Difference]: With dead ends: 3040 [2020-09-25 11:15:39,389 INFO L226 Difference]: Without dead ends: 2299 [2020-09-25 11:15:39,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=778, Invalid=2084, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 11:15:39,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2020-09-25 11:15:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2173. [2020-09-25 11:15:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-09-25 11:15:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2772 transitions. [2020-09-25 11:15:39,508 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2772 transitions. Word has length 176 [2020-09-25 11:15:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:39,509 INFO L479 AbstractCegarLoop]: Abstraction has 2173 states and 2772 transitions. [2020-09-25 11:15:39,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 11:15:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2772 transitions. [2020-09-25 11:15:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 11:15:39,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:39,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:39,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:39,523 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:39,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1308161936, now seen corresponding path program 1 times [2020-09-25 11:15:39,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:39,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601790939] [2020-09-25 11:15:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking...