/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:37,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:37,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:37,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:37,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:37,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:37,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:37,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:37,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:37,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:37,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:37,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:37,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:37,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:37,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:37,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:37,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:37,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:37,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:37,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:37,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:37,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:37,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:37,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:37,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:37,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:37,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:37,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:37,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:37,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:37,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:37,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:37,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:37,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:37,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:37,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:37,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:37,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:37,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:37,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:37,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:37,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:31:37,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:37,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:37,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:37,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:37,827 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:37,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:37,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:37,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:37,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:37,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:37,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:37,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:37,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:37,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:37,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:37,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:37,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:37,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:37,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:37,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:37,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:37,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:37,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:37,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:37,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:37,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:37,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:37,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:37,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:37,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:31:38,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:38,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:38,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:38,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:38,341 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:38,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 04:31:38,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f860999f4/2f02a375504945ee8d5be16b84337305/FLAG60f8e601f [2020-09-25 04:31:39,151 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:39,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 04:31:39,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f860999f4/2f02a375504945ee8d5be16b84337305/FLAG60f8e601f [2020-09-25 04:31:39,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f860999f4/2f02a375504945ee8d5be16b84337305 [2020-09-25 04:31:39,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:39,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:39,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:39,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:39,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:39,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:39" (1/1) ... [2020-09-25 04:31:39,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d9afb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:39, skipping insertion in model container [2020-09-25 04:31:39,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:39" (1/1) ... [2020-09-25 04:31:39,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:39,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:40,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:40,116 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:40,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:40,319 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:40,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40 WrapperNode [2020-09-25 04:31:40,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:40,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:40,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:40,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:40,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... [2020-09-25 04:31:40,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:40,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:40,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:40,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:40,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:42,480 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:42,481 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:42,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:42 BoogieIcfgContainer [2020-09-25 04:31:42,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:42,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:42,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:42,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:42,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:39" (1/3) ... [2020-09-25 04:31:42,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50accc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:42, skipping insertion in model container [2020-09-25 04:31:42,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:40" (2/3) ... [2020-09-25 04:31:42,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50accc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:42, skipping insertion in model container [2020-09-25 04:31:42,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:42" (3/3) ... [2020-09-25 04:31:42,520 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 04:31:42,533 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:42,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:42,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:42,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:42,620 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:42,620 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:42,621 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:42,621 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:42,621 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:42,621 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:42,621 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 04:31:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 04:31:42,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:42,688 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] [2020-09-25 04:31:42,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:42,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:42,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 04:31:42,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:42,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177185773] [2020-09-25 04:31:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:43,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:31:43,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:31:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 04:31:43,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:43,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:31:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 04:31:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:43,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:43,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:43,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:43,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:31:43,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:43,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:31:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:43,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177185773] [2020-09-25 04:31:43,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:43,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:43,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131343962] [2020-09-25 04:31:43,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:43,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:43,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:43,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:43,993 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 04:31:46,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:46,812 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 04:31:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:46,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 04:31:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:46,840 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 04:31:46,840 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 04:31:46,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 04:31:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 04:31:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 04:31:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 04:31:46,980 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-25 04:31:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:46,982 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 04:31:46,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 04:31:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 04:31:46,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:46,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:46,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:46,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:46,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:46,992 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-25 04:31:46,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:46,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111057486] [2020-09-25 04:31:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:47,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:51,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 04:31:51,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:31:51,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4909 [2020-09-25 04:31:51,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:51,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-25 04:31:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:31:51,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:52,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:52,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:52,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:52,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:52,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:52,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:52,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 04:31:52,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:52,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:31:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:52,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111057486] [2020-09-25 04:31:52,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:52,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:52,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812951521] [2020-09-25 04:31:52,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:52,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:52,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:52,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:52,204 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 5 states. [2020-09-25 04:31:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:54,889 INFO L93 Difference]: Finished difference Result 1816 states and 2293 transitions. [2020-09-25 04:31:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:54,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 04:31:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:54,897 INFO L225 Difference]: With dead ends: 1816 [2020-09-25 04:31:54,897 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 04:31:54,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 04:31:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 997. [2020-09-25 04:31:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 04:31:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1182 transitions. [2020-09-25 04:31:54,936 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1182 transitions. Word has length 141 [2020-09-25 04:31:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:54,937 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1182 transitions. [2020-09-25 04:31:54,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1182 transitions. [2020-09-25 04:31:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 04:31:54,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:54,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:54,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:54,949 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash 892447597, now seen corresponding path program 1 times [2020-09-25 04:31:54,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:54,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884283110] [2020-09-25 04:31:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 04:32:00,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:32:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:32:00,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:32:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-25 04:32:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:32:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:00,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:32:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:32:00,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 04:32:00,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:32:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:32:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:32:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:00,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 04:32:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:00,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884283110] [2020-09-25 04:32:00,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:00,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:32:00,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666831960] [2020-09-25 04:32:00,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:32:00,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:00,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:32:00,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:32:00,880 INFO L87 Difference]: Start difference. First operand 997 states and 1182 transitions. Second operand 9 states. [2020-09-25 04:32:06,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:06,132 INFO L93 Difference]: Finished difference Result 2971 states and 3702 transitions. [2020-09-25 04:32:06,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:32:06,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2020-09-25 04:32:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:06,148 INFO L225 Difference]: With dead ends: 2971 [2020-09-25 04:32:06,148 INFO L226 Difference]: Without dead ends: 1770 [2020-09-25 04:32:06,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:32:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-09-25 04:32:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1605. [2020-09-25 04:32:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-09-25 04:32:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1909 transitions. [2020-09-25 04:32:06,219 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1909 transitions. Word has length 235 [2020-09-25 04:32:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:06,220 INFO L479 AbstractCegarLoop]: Abstraction has 1605 states and 1909 transitions. [2020-09-25 04:32:06,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:32:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1909 transitions. [2020-09-25 04:32:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 04:32:06,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:06,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:32:06,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:32:06,226 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:06,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1490592228, now seen corresponding path program 1 times [2020-09-25 04:32:06,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:06,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660273929] [2020-09-25 04:32:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:08,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:11,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 04:32:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:32:11,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:32:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:11,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:32:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:32:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:32:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:11,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:11,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:11,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:11,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:32:11,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:11,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:11,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:11,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:32:11,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 04:32:11,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:11,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:32:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:32:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:11,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 04:32:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:11,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 04:32:11,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:11,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:12,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660273929] [2020-09-25 04:32:12,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:12,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:32:12,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912580618] [2020-09-25 04:32:12,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:32:12,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:12,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:32:12,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:32:12,007 INFO L87 Difference]: Start difference. First operand 1605 states and 1909 transitions. Second operand 8 states. [2020-09-25 04:32:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:17,132 INFO L93 Difference]: Finished difference Result 4478 states and 5555 transitions. [2020-09-25 04:32:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:32:17,133 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-09-25 04:32:17,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:17,148 INFO L225 Difference]: With dead ends: 4478 [2020-09-25 04:32:17,148 INFO L226 Difference]: Without dead ends: 2313 [2020-09-25 04:32:17,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:32:17,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2020-09-25 04:32:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 1939. [2020-09-25 04:32:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2020-09-25 04:32:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2137 transitions. [2020-09-25 04:32:17,226 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2137 transitions. Word has length 238 [2020-09-25 04:32:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:17,227 INFO L479 AbstractCegarLoop]: Abstraction has 1939 states and 2137 transitions. [2020-09-25 04:32:17,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:32:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2137 transitions. [2020-09-25 04:32:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 04:32:17,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:17,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:32:17,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:32:17,232 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:17,232 INFO L82 PathProgramCache]: Analyzing trace with hash 606199573, now seen corresponding path program 1 times [2020-09-25 04:32:17,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:17,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833418160] [2020-09-25 04:32:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:22,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:22,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 04:32:22,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:32:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 04:32:22,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:22,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:32:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:32:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-09-25 04:32:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:32:22,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:22,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:22,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:22,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:22,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:32:22,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:22,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:22,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:22,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:22,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:32:22,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:32:22,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:22,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 04:32:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 04:32:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:22,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 04:32:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:32:23,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833418160] [2020-09-25 04:32:23,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:32:23,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:32:23,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545774568] [2020-09-25 04:32:23,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:32:23,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:32:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:32:23,068 INFO L87 Difference]: Start difference. First operand 1939 states and 2137 transitions. Second operand 7 states. [2020-09-25 04:32:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:25,358 INFO L93 Difference]: Finished difference Result 4752 states and 5337 transitions. [2020-09-25 04:32:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:32:25,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-09-25 04:32:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:25,372 INFO L225 Difference]: With dead ends: 4752 [2020-09-25 04:32:25,373 INFO L226 Difference]: Without dead ends: 2828 [2020-09-25 04:32:25,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:32:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2020-09-25 04:32:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2524. [2020-09-25 04:32:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2524 states. [2020-09-25 04:32:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 2838 transitions. [2020-09-25 04:32:25,447 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 2838 transitions. Word has length 251 [2020-09-25 04:32:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:25,448 INFO L479 AbstractCegarLoop]: Abstraction has 2524 states and 2838 transitions. [2020-09-25 04:32:25,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:32:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 2838 transitions. [2020-09-25 04:32:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-25 04:32:25,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:25,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:32:25,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:32:25,456 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1187173861, now seen corresponding path program 1 times [2020-09-25 04:32:25,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:25,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78931254] [2020-09-25 04:32:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking...