/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=0.8 --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 07:57:58,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:58,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:58,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:58,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:58,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:58,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:58,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:58,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:58,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:58,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:58,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:58,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:58,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:58,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:58,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:58,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:58,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:58,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:58,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:58,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:58,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:58,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:58,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:58,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:58,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:58,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:58,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:58,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:58,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:58,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:58,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:58,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:58,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:58,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:58,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:58,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:58,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:58,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:58,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:58,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:58,887 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 07:57:58,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:58,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:58,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:58,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:58,940 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:58,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:58,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:58,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:58,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:58,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:58,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:58,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:58,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:58,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:58,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:58,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:58,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:58,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:58,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:58,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:58,947 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:57:59,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:59,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:59,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:59,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:59,478 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:59,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 07:57:59,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c14be1bb/ac07961c8bf641bc9c81240c0a692551/FLAG98fa3b60d [2020-09-25 07:58:00,264 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:58:00,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 07:58:00,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c14be1bb/ac07961c8bf641bc9c81240c0a692551/FLAG98fa3b60d [2020-09-25 07:58:00,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c14be1bb/ac07961c8bf641bc9c81240c0a692551 [2020-09-25 07:58:00,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:58:00,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:58:00,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:58:00,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:58:00,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:58:00,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:58:00" (1/1) ... [2020-09-25 07:58:00,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:00, skipping insertion in model container [2020-09-25 07:58:00,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:58:00" (1/1) ... [2020-09-25 07:58:00,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:58:00,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:58:01,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:58:01,143 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:58:01,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:58:01,413 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:58:01,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01 WrapperNode [2020-09-25 07:58:01,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:58:01,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:58:01,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:58:01,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:58:01,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:58:01,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:58:01,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:58:01,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:58:01,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (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 07:58:01,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:58:01,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:58:01,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:58:01,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:58:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:58:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:58:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:58:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:58:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:58:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:58:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:58:03,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:58:03,496 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:58:03,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:58:03 BoogieIcfgContainer [2020-09-25 07:58:03,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:58:03,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:58:03,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:58:03,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:58:03,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:58:00" (1/3) ... [2020-09-25 07:58:03,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baadc76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:58:03, skipping insertion in model container [2020-09-25 07:58:03,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01" (2/3) ... [2020-09-25 07:58:03,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baadc76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:58:03, skipping insertion in model container [2020-09-25 07:58:03,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:58:03" (3/3) ... [2020-09-25 07:58:03,531 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 07:58:03,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:58:03,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:58:03,588 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:58:03,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:58:03,629 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:58:03,630 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:58:03,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:58:03,630 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:58:03,630 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:58:03,630 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:58:03,630 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:58:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 07:58:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 07:58:03,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:03,683 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 07:58:03,683 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 07:58:03,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:03,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697095985] [2020-09-25 07:58:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:58:04,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:58:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-09-25 07:58:04,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:58:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 07:58:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:58:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:04,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:58:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:58:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:04,852 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 07:58:04,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697095985] [2020-09-25 07:58:04,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:04,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:58:04,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147955750] [2020-09-25 07:58:04,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:58:04,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:04,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:58:04,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:58:04,887 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 07:58:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:07,721 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 07:58:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:58:07,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 07:58:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:07,754 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 07:58:07,754 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 07:58:07,766 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 07:58:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 07:58:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 07:58:07,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 07:58:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 07:58:07,875 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-25 07:58:07,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:07,876 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 07:58:07,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:58:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 07:58:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 07:58:07,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:07,885 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 07:58:07,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:58:07,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-25 07:58:07,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:07,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020789905] [2020-09-25 07:58:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:12,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 07:58:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:58:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:12,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:58:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 07:58:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:58:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:13,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:58:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:13,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:13,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:58:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 07:58:13,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:13,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:58:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:13,257 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 07:58:13,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020789905] [2020-09-25 07:58:13,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:13,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:13,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355217589] [2020-09-25 07:58:13,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:13,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:13,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:13,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:13,261 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-25 07:58:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:16,853 INFO L93 Difference]: Finished difference Result 2101 states and 2645 transitions. [2020-09-25 07:58:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:16,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-09-25 07:58:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:16,867 INFO L225 Difference]: With dead ends: 2101 [2020-09-25 07:58:16,867 INFO L226 Difference]: Without dead ends: 1310 [2020-09-25 07:58:16,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:58:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-25 07:58:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1192. [2020-09-25 07:58:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-09-25 07:58:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1448 transitions. [2020-09-25 07:58:16,978 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1448 transitions. Word has length 141 [2020-09-25 07:58:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:16,980 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1448 transitions. [2020-09-25 07:58:16,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1448 transitions. [2020-09-25 07:58:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 07:58:16,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:16,991 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, 1, 1, 1] [2020-09-25 07:58:16,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:58:16,991 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:16,992 INFO L82 PathProgramCache]: Analyzing trace with hash 223490446, now seen corresponding path program 1 times [2020-09-25 07:58:16,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:16,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290027559] [2020-09-25 07:58:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 07:58:20,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:58:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3318 [2020-09-25 07:58:20,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:58:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:58:20,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:20,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:20,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:20,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:58:20,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:58:20,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:58:20,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 07:58:20,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:58:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:20,717 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 07:58:20,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290027559] [2020-09-25 07:58:20,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:20,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:20,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794860271] [2020-09-25 07:58:20,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:20,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:20,723 INFO L87 Difference]: Start difference. First operand 1192 states and 1448 transitions. Second operand 7 states. [2020-09-25 07:58:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:23,969 INFO L93 Difference]: Finished difference Result 3085 states and 3863 transitions. [2020-09-25 07:58:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:58:23,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 07:58:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:23,986 INFO L225 Difference]: With dead ends: 3085 [2020-09-25 07:58:23,986 INFO L226 Difference]: Without dead ends: 1908 [2020-09-25 07:58:23,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-09-25 07:58:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1862. [2020-09-25 07:58:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-09-25 07:58:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2200 transitions. [2020-09-25 07:58:24,089 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2200 transitions. Word has length 144 [2020-09-25 07:58:24,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:24,091 INFO L479 AbstractCegarLoop]: Abstraction has 1862 states and 2200 transitions. [2020-09-25 07:58:24,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2200 transitions. [2020-09-25 07:58:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 07:58:24,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:24,098 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, 1, 1, 1, 1, 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 07:58:24,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:58:24,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash 209857670, now seen corresponding path program 1 times [2020-09-25 07:58:24,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:24,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388767836] [2020-09-25 07:58:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 07:58:29,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 07:58:29,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 07:58:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 07:58:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:58:29,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:58:29,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:58:29,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 07:58:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:58:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:58:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 07:58:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 07:58:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:29,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388767836] [2020-09-25 07:58:29,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:29,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:58:29,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650209037] [2020-09-25 07:58:29,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:58:29,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:29,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:58:29,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:58:29,853 INFO L87 Difference]: Start difference. First operand 1862 states and 2200 transitions. Second operand 8 states. [2020-09-25 07:58:33,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:33,418 INFO L93 Difference]: Finished difference Result 4219 states and 5170 transitions. [2020-09-25 07:58:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:33,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-25 07:58:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:33,434 INFO L225 Difference]: With dead ends: 4219 [2020-09-25 07:58:33,434 INFO L226 Difference]: Without dead ends: 2561 [2020-09-25 07:58:33,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2020-09-25 07:58:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2519. [2020-09-25 07:58:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-09-25 07:58:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 2961 transitions. [2020-09-25 07:58:33,518 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 2961 transitions. Word has length 249 [2020-09-25 07:58:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:33,519 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 2961 transitions. [2020-09-25 07:58:33,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:58:33,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 2961 transitions. [2020-09-25 07:58:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 07:58:33,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:33,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:33,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:58:33,527 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:33,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1445306711, now seen corresponding path program 1 times [2020-09-25 07:58:33,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:33,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728006529] [2020-09-25 07:58:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:38,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:38,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 07:58:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:58:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-25 07:58:38,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:38,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:58:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 07:58:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 07:58:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:38,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:38,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:38,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:58:38,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:38,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:38,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:38,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:38,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:58:38,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:58:38,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:38,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:58:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:38,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 07:58:38,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:58:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:39,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:39,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:58:39,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-25 07:58:39,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:39,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:58:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:39,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728006529] [2020-09-25 07:58:39,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:39,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:58:39,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428873656] [2020-09-25 07:58:39,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:58:39,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:39,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:58:39,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:58:39,764 INFO L87 Difference]: Start difference. First operand 2519 states and 2961 transitions. Second operand 8 states. [2020-09-25 07:58:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:44,564 INFO L93 Difference]: Finished difference Result 5867 states and 7061 transitions. [2020-09-25 07:58:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:58:44,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 304 [2020-09-25 07:58:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:44,585 INFO L225 Difference]: With dead ends: 5867 [2020-09-25 07:58:44,586 INFO L226 Difference]: Without dead ends: 3552 [2020-09-25 07:58:44,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:58:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-09-25 07:58:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3510. [2020-09-25 07:58:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3510 states. [2020-09-25 07:58:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 4061 transitions. [2020-09-25 07:58:44,680 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 4061 transitions. Word has length 304 [2020-09-25 07:58:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:44,681 INFO L479 AbstractCegarLoop]: Abstraction has 3510 states and 4061 transitions. [2020-09-25 07:58:44,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:58:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 4061 transitions. [2020-09-25 07:58:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-25 07:58:44,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:44,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:44,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:44,690 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:44,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:44,690 INFO L82 PathProgramCache]: Analyzing trace with hash 136115333, now seen corresponding path program 1 times [2020-09-25 07:58:44,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:44,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556968248] [2020-09-25 07:58:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:46,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:49,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:49,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-09-25 07:58:49,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:58:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 07:58:49,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:49,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 07:58:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:58:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:49,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:49,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:49,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:58:49,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:49,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21