/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/Problem02_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:08,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:08,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:08,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:08,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:08,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:08,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:08,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:08,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:08,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:08,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:08,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:08,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:08,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:08,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:08,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:08,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:08,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:08,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:08,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:08,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:08,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:08,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:08,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:08,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:08,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:08,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:08,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:08,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:08,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:08,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:08,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:08,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:08,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:08,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:08,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:08,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:08,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:08,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:08,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:08,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:08,768 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 04:27:08,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:08,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:08,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:08,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:08,826 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:08,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:08,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:08,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:08,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:08,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:08,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:08,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:08,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:08,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:08,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:08,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:08,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:08,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:08,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:08,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:08,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:08,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:08,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:08,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:08,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:08,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:08,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:08,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:08,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:08,832 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 04:27:09,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:09,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:09,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:09,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:09,314 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:09,315 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 04:27:09,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6744fa386/394d910e2ecb4ae7b2d7e55e991c0102/FLAG9cd0bd253 [2020-09-25 04:27:10,057 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:10,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 04:27:10,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6744fa386/394d910e2ecb4ae7b2d7e55e991c0102/FLAG9cd0bd253 [2020-09-25 04:27:10,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6744fa386/394d910e2ecb4ae7b2d7e55e991c0102 [2020-09-25 04:27:10,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:10,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:10,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:10,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:10,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:10,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:10" (1/1) ... [2020-09-25 04:27:10,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1dceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:10, skipping insertion in model container [2020-09-25 04:27:10,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:10" (1/1) ... [2020-09-25 04:27:10,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:10,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:10,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:10,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:11,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:11,141 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:11,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11 WrapperNode [2020-09-25 04:27:11,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:11,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:11,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:11,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:11,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (1/1) ... [2020-09-25 04:27:11,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (1/1) ... [2020-09-25 04:27:11,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (1/1) ... [2020-09-25 04:27:11,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (1/1) ... [2020-09-25 04:27:11,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (1/1) ... [2020-09-25 04:27:11,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (1/1) ... [2020-09-25 04:27:11,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (1/1) ... [2020-09-25 04:27:11,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:11,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:11,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:11,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:11,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (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 04:27:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:12,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:12,797 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:12,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:12 BoogieIcfgContainer [2020-09-25 04:27:12,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:12,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:12,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:12,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:12,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:10" (1/3) ... [2020-09-25 04:27:12,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c457dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:12, skipping insertion in model container [2020-09-25 04:27:12,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:11" (2/3) ... [2020-09-25 04:27:12,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c457dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:12, skipping insertion in model container [2020-09-25 04:27:12,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:12" (3/3) ... [2020-09-25 04:27:12,817 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label14.c [2020-09-25 04:27:12,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:12,842 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:12,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:12,911 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:12,911 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:12,911 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:12,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:12,912 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:12,912 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:12,912 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:12,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 04:27:12,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:12,977 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] [2020-09-25 04:27:12,977 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:12,987 INFO L82 PathProgramCache]: Analyzing trace with hash 569136050, now seen corresponding path program 1 times [2020-09-25 04:27:13,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:13,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319136938] [2020-09-25 04:27:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:13,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:18,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:18,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 04:27:18,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:27:18,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:18,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:27:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 04:27:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:27:18,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:18,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:18,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:18,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 04:27:18,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:18,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:27:18,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:18,766 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 04:27:18,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319136938] [2020-09-25 04:27:18,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:18,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:27:18,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791663853] [2020-09-25 04:27:18,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:27:18,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:18,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:27:18,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:27:18,802 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:27:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:21,053 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 04:27:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:27:21,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 04:27:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:21,104 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 04:27:21,105 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 04:27:21,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 04:27:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 04:27:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 04:27:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 04:27:21,238 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 143 [2020-09-25 04:27:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:21,239 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 04:27:21,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:27:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 04:27:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 04:27:21,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:21,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:21,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:21,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:21,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:21,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1046453143, now seen corresponding path program 1 times [2020-09-25 04:27:21,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:21,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747462392] [2020-09-25 04:27:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:21,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:26,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:27:26,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:26,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:27:26,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:26,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:26,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:27:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:27:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:27:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:27:26,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:26,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:27:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:26,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:26,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:27:26,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:27:26,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:26,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:26,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:26,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:27:26,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:26,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747462392] [2020-09-25 04:27:26,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:26,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:27:26,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768026826] [2020-09-25 04:27:26,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:26,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:26,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:26,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:26,777 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 8 states. [2020-09-25 04:27:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:30,559 INFO L93 Difference]: Finished difference Result 2086 states and 2719 transitions. [2020-09-25 04:27:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:27:30,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 177 [2020-09-25 04:27:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:30,574 INFO L225 Difference]: With dead ends: 2086 [2020-09-25 04:27:30,575 INFO L226 Difference]: Without dead ends: 1495 [2020-09-25 04:27:30,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:27:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2020-09-25 04:27:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1266. [2020-09-25 04:27:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-09-25 04:27:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1650 transitions. [2020-09-25 04:27:30,652 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1650 transitions. Word has length 177 [2020-09-25 04:27:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:30,652 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 1650 transitions. [2020-09-25 04:27:30,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:27:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1650 transitions. [2020-09-25 04:27:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:27:30,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:30,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:30,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:30,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:30,661 INFO L82 PathProgramCache]: Analyzing trace with hash 139340650, now seen corresponding path program 1 times [2020-09-25 04:27:30,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:30,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782664078] [2020-09-25 04:27:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:35,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 04:27:35,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:27:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:27:35,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:35,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 04:27:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 04:27:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:35,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:35,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:35,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:35,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:27:35,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:35,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:27:35,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:36,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782664078] [2020-09-25 04:27:36,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:36,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:36,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910931937] [2020-09-25 04:27:36,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:36,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:36,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:36,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:36,011 INFO L87 Difference]: Start difference. First operand 1266 states and 1650 transitions. Second operand 5 states. [2020-09-25 04:27:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:37,784 INFO L93 Difference]: Finished difference Result 2283 states and 2952 transitions. [2020-09-25 04:27:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:37,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 04:27:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:37,797 INFO L225 Difference]: With dead ends: 2283 [2020-09-25 04:27:37,797 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 04:27:37,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 04:27:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 04:27:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 933. [2020-09-25 04:27:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-09-25 04:27:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1150 transitions. [2020-09-25 04:27:37,854 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1150 transitions. Word has length 181 [2020-09-25 04:27:37,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:37,856 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1150 transitions. [2020-09-25 04:27:37,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1150 transitions. [2020-09-25 04:27:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 04:27:37,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:37,863 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:37,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:37,863 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:37,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1806294077, now seen corresponding path program 1 times [2020-09-25 04:27:37,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:37,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855225974] [2020-09-25 04:27:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:42,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:42,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 04:27:42,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:42,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:27:42,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:42,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:27:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:27:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:43,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:43,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:43,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:43,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:43,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:43,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:43,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:27:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:27:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:27:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 04:27:43,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:27:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:27:43,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855225974] [2020-09-25 04:27:43,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:43,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:43,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220926229] [2020-09-25 04:27:43,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:43,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:43,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:43,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:43,275 INFO L87 Difference]: Start difference. First operand 933 states and 1150 transitions. Second operand 7 states. [2020-09-25 04:27:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:46,642 INFO L93 Difference]: Finished difference Result 2913 states and 4072 transitions. [2020-09-25 04:27:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:46,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 04:27:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:46,661 INFO L225 Difference]: With dead ends: 2913 [2020-09-25 04:27:46,661 INFO L226 Difference]: Without dead ends: 2002 [2020-09-25 04:27:46,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2020-09-25 04:27:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1782. [2020-09-25 04:27:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1782 states. [2020-09-25 04:27:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2158 transitions. [2020-09-25 04:27:46,763 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2158 transitions. Word has length 195 [2020-09-25 04:27:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:46,764 INFO L479 AbstractCegarLoop]: Abstraction has 1782 states and 2158 transitions. [2020-09-25 04:27:46,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2158 transitions. [2020-09-25 04:27:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 04:27:46,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:46,773 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:46,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:46,774 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:46,774 INFO L82 PathProgramCache]: Analyzing trace with hash 551155189, now seen corresponding path program 1 times [2020-09-25 04:27:46,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:46,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162761719] [2020-09-25 04:27:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 04:27:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4240 [2020-09-25 04:27:51,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 04:27:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 04:27:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:27:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:27:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:27:51,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:51,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 04:27:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:27:51,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:27:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:27:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 04:27:51,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162761719] [2020-09-25 04:27:51,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:51,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:27:51,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020494611] [2020-09-25 04:27:51,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:27:51,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:51,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:27:51,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:51,382 INFO L87 Difference]: Start difference. First operand 1782 states and 2158 transitions. Second operand 6 states. [2020-09-25 04:27:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:53,803 INFO L93 Difference]: Finished difference Result 3804 states and 4748 transitions. [2020-09-25 04:27:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:27:53,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2020-09-25 04:27:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:53,816 INFO L225 Difference]: With dead ends: 3804 [2020-09-25 04:27:53,816 INFO L226 Difference]: Without dead ends: 2231 [2020-09-25 04:27:53,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-09-25 04:27:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1921. [2020-09-25 04:27:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-09-25 04:27:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2261 transitions. [2020-09-25 04:27:53,883 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2261 transitions. Word has length 199 [2020-09-25 04:27:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:53,884 INFO L479 AbstractCegarLoop]: Abstraction has 1921 states and 2261 transitions. [2020-09-25 04:27:53,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:27:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2261 transitions. [2020-09-25 04:27:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 04:27:53,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:53,893 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, 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] [2020-09-25 04:27:53,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:27:53,893 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:53,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1287869319, now seen corresponding path program 1 times [2020-09-25 04:27:53,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:53,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796401261] [2020-09-25 04:27:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking...