/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:33,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:33,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:33,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:33,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:33,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:33,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:33,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:33,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:33,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:33,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:33,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:33,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:33,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:33,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:33,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:33,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:33,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:33,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:33,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:33,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:33,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:33,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:33,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:33,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:33,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:33,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:33,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:33,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:33,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:33,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:33,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:33,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:33,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:33,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:33,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:33,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:33,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:33,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:33,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:33,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:33,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:07:33,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:33,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:33,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:33,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:33,758 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:33,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:33,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:33,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:33,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:33,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:33,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:33,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:33,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:33,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:33,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:33,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:33,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:33,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:33,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:33,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:33,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:33,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:33,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:33,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:33,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:33,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:33,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:33,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:33,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:33,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:07:34,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:34,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:34,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:34,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:34,212 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:34,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 10:07:34,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/349e1ae84/162726bda3e345dd93a3fd7d2e872464/FLAG0a997d541 [2020-09-25 10:07:34,951 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:34,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 10:07:34,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/349e1ae84/162726bda3e345dd93a3fd7d2e872464/FLAG0a997d541 [2020-09-25 10:07:35,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/349e1ae84/162726bda3e345dd93a3fd7d2e872464 [2020-09-25 10:07:35,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:35,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:35,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:35,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:35,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:35,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:35" (1/1) ... [2020-09-25 10:07:35,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8f57a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:35, skipping insertion in model container [2020-09-25 10:07:35,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:35" (1/1) ... [2020-09-25 10:07:35,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:35,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:35,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:35,879 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:36,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:36,090 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:36,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36 WrapperNode [2020-09-25 10:07:36,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:36,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:36,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:36,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:36,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... [2020-09-25 10:07:36,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... [2020-09-25 10:07:36,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... [2020-09-25 10:07:36,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... [2020-09-25 10:07:36,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... [2020-09-25 10:07:36,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... [2020-09-25 10:07:36,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... [2020-09-25 10:07:36,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:36,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:36,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:36,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:36,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:36,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:36,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:36,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:37,611 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:37,611 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:37,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:37 BoogieIcfgContainer [2020-09-25 10:07:37,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:37,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:37,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:37,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:37,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:35" (1/3) ... [2020-09-25 10:07:37,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4827d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:37, skipping insertion in model container [2020-09-25 10:07:37,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:36" (2/3) ... [2020-09-25 10:07:37,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4827d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:37, skipping insertion in model container [2020-09-25 10:07:37,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:37" (3/3) ... [2020-09-25 10:07:37,632 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 10:07:37,644 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:37,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:37,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:37,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:37,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:37,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:37,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:37,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:37,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:37,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:37,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 10:07:37,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:37,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:37,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:37,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 10:07:37,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:37,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758657968] [2020-09-25 10:07:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:38,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:43,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 10:07:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:07:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:43,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:07:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:07:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:07:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:07:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:43,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:43,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:43,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:43,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:43,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758657968] [2020-09-25 10:07:43,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:43,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:07:43,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480615567] [2020-09-25 10:07:43,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:07:43,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:43,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:07:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:07:43,477 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:07:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:45,422 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 10:07:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:07:45,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 10:07:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:45,469 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 10:07:45,469 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 10:07:45,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 10:07:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 10:07:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:07:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 10:07:45,646 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 10:07:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:45,648 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 10:07:45,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:07:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 10:07:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 10:07:45,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:45,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:45,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:45,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:45,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 10:07:45,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:45,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265024194] [2020-09-25 10:07:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:50,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 10:07:50,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:07:50,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:50,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:07:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:07:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:07:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:51,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:51,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:07:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:51,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:51,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:51,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:51,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 10:07:51,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:51,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:07:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:51,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:51,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265024194] [2020-09-25 10:07:51,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:51,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:07:51,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597066626] [2020-09-25 10:07:51,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:07:51,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:51,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:07:51,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:07:51,763 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 13 states. [2020-09-25 10:07:52,447 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-09-25 10:07:52,874 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-09-25 10:07:53,225 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-09-25 10:07:54,084 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-09-25 10:07:55,147 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-09-25 10:07:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:58,310 INFO L93 Difference]: Finished difference Result 2568 states and 3437 transitions. [2020-09-25 10:07:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:07:58,311 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 171 [2020-09-25 10:07:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:58,330 INFO L225 Difference]: With dead ends: 2568 [2020-09-25 10:07:58,330 INFO L226 Difference]: Without dead ends: 1710 [2020-09-25 10:07:58,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=305, Invalid=625, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:07:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2020-09-25 10:07:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1361. [2020-09-25 10:07:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-09-25 10:07:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1605 transitions. [2020-09-25 10:07:58,416 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1605 transitions. Word has length 171 [2020-09-25 10:07:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:58,417 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 1605 transitions. [2020-09-25 10:07:58,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:07:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1605 transitions. [2020-09-25 10:07:58,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 10:07:58,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:58,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-09-25 10:07:58,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:58,424 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:58,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1979898535, now seen corresponding path program 1 times [2020-09-25 10:07:58,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:58,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929666981] [2020-09-25 10:07:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:03,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:03,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 10:08:03,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 10:08:03,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 10:08:03,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:03,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:08:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:08:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:04,059 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-09-25 10:08:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:04,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:04,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:04,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:08:04,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:04,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:04,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:08:04,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:08:04,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:04,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:08:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:08:04,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:08:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:04,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:08:04,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 10:08:04,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:04,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:08:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 10:08:04,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929666981] [2020-09-25 10:08:04,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:04,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:08:04,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357961520] [2020-09-25 10:08:04,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:08:04,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:04,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:08:04,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:08:04,639 INFO L87 Difference]: Start difference. First operand 1361 states and 1605 transitions. Second operand 12 states. [2020-09-25 10:08:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:09,105 INFO L93 Difference]: Finished difference Result 4641 states and 5831 transitions. [2020-09-25 10:08:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:08:09,106 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 196 [2020-09-25 10:08:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:09,121 INFO L225 Difference]: With dead ends: 4641 [2020-09-25 10:08:09,121 INFO L226 Difference]: Without dead ends: 2507 [2020-09-25 10:08:09,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:08:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-09-25 10:08:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2186. [2020-09-25 10:08:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2186 states. [2020-09-25 10:08:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 2544 transitions. [2020-09-25 10:08:09,206 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 2544 transitions. Word has length 196 [2020-09-25 10:08:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:09,207 INFO L479 AbstractCegarLoop]: Abstraction has 2186 states and 2544 transitions. [2020-09-25 10:08:09,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:08:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 2544 transitions. [2020-09-25 10:08:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-25 10:08:09,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:09,217 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:09,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:08:09,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:09,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:09,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2117768318, now seen corresponding path program 1 times [2020-09-25 10:08:09,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:09,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035726464] [2020-09-25 10:08:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:09,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:10,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:08:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:14,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:08:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 10:08:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 10:08:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:14,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:08:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:08:14,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:14,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:14,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:08:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:14,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:08:14,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:14,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:08:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:14,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:14,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 10:08:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:14,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:08:14,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:08:14,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:14,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 10:08:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:14,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 10:08:14,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:14,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:08:14,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:14,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 10:08:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:15,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 10:08:15,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:08:15,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:15,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:15,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:08:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:08:15,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 10:08:15,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035726464] [2020-09-25 10:08:15,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:15,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:08:15,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592353108] [2020-09-25 10:08:15,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:08:15,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:08:15,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:08:15,476 INFO L87 Difference]: Start difference. First operand 2186 states and 2544 transitions. Second operand 16 states. [2020-09-25 10:08:17,688 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-25 10:08:17,851 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 10:08:18,659 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-25 10:08:19,319 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-09-25 10:08:19,848 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-09-25 10:08:20,228 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-09-25 10:08:20,894 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-09-25 10:08:21,316 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-09-25 10:08:21,584 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-09-25 10:08:21,801 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-09-25 10:08:22,286 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-09-25 10:08:22,578 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-09-25 10:08:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:23,484 INFO L93 Difference]: Finished difference Result 4945 states and 5862 transitions. [2020-09-25 10:08:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 10:08:23,485 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 255 [2020-09-25 10:08:23,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:23,499 INFO L225 Difference]: With dead ends: 4945 [2020-09-25 10:08:23,500 INFO L226 Difference]: Without dead ends: 2783 [2020-09-25 10:08:23,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=482, Invalid=1078, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 10:08:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-09-25 10:08:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2719. [2020-09-25 10:08:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2719 states. [2020-09-25 10:08:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3138 transitions. [2020-09-25 10:08:23,597 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3138 transitions. Word has length 255 [2020-09-25 10:08:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:23,598 INFO L479 AbstractCegarLoop]: Abstraction has 2719 states and 3138 transitions. [2020-09-25 10:08:23,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:08:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3138 transitions. [2020-09-25 10:08:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-25 10:08:23,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:23,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:23,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:08:23,611 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash -476836029, now seen corresponding path program 1 times [2020-09-25 10:08:23,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:23,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6178576] [2020-09-25 10:08:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking...