/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/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:10,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:10,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:10,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:10,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:10,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:10,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:10,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:10,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:10,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:10,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:10,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:10,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:10,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:10,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:10,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:10,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:10,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:10,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:10,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:10,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:10,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:10,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:10,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:10,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:10,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:10,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:10,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:10,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:10,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:10,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:10,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:10,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:10,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:10,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:10,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:10,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:10,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:10,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:10,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:10,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:10,777 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 04:25:10,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:10,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:10,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:10,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:10,804 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:10,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:10,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:10,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:10,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:10,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:10,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:10,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:10,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:10,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:10,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:10,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:10,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:10,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:10,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:10,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:10,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:10,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:10,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:10,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:10,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:10,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:10,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:10,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:10,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:10,809 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 04:25:11,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:11,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:11,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:11,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:11,302 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:11,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 04:25:11,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/049f3c6dc/d88c9f92486b4033aef5da555076ff31/FLAGc9607a73d [2020-09-25 04:25:12,104 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:12,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 04:25:12,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/049f3c6dc/d88c9f92486b4033aef5da555076ff31/FLAGc9607a73d [2020-09-25 04:25:12,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/049f3c6dc/d88c9f92486b4033aef5da555076ff31 [2020-09-25 04:25:12,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:12,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:12,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:12,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:12,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:12,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:12" (1/1) ... [2020-09-25 04:25:12,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376ee863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:12, skipping insertion in model container [2020-09-25 04:25:12,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:12" (1/1) ... [2020-09-25 04:25:12,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:12,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:12,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:12,966 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:13,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:13,205 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:13,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13 WrapperNode [2020-09-25 04:25:13,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:13,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:13,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:13,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:13,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (1/1) ... [2020-09-25 04:25:13,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (1/1) ... [2020-09-25 04:25:13,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (1/1) ... [2020-09-25 04:25:13,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (1/1) ... [2020-09-25 04:25:13,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (1/1) ... [2020-09-25 04:25:13,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (1/1) ... [2020-09-25 04:25:13,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (1/1) ... [2020-09-25 04:25:13,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:13,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:13,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:13,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:13,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (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 04:25:13,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:13,439 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:14,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:14,824 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:14,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:14 BoogieIcfgContainer [2020-09-25 04:25:14,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:14,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:14,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:14,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:14,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:12" (1/3) ... [2020-09-25 04:25:14,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7ac524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:14, skipping insertion in model container [2020-09-25 04:25:14,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:13" (2/3) ... [2020-09-25 04:25:14,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7ac524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:14, skipping insertion in model container [2020-09-25 04:25:14,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:14" (3/3) ... [2020-09-25 04:25:14,844 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-25 04:25:14,856 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:14,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:14,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:14,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:14,930 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:14,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:14,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:14,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:14,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:14,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:14,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:25:14,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:14,987 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] [2020-09-25 04:25:14,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:14,996 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-25 04:25:15,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:15,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041328712] [2020-09-25 04:25:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:20,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:25:20,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:25:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:25:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:20,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:25:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 04:25:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:25:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:20,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:25:20,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:20,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:20,595 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 04:25:20,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041328712] [2020-09-25 04:25:20,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:20,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:20,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235612065] [2020-09-25 04:25:20,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:20,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:20,629 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:22,805 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-25 04:25:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:22,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 04:25:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:22,846 INFO L225 Difference]: With dead ends: 1338 [2020-09-25 04:25:22,846 INFO L226 Difference]: Without dead ends: 739 [2020-09-25 04:25:22,859 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 04:25:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-25 04:25:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-25 04:25:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 04:25:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 04:25:22,979 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-25 04:25:22,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:22,980 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 04:25:22,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 04:25:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 04:25:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:22,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:22,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:22,989 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-25 04:25:22,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:22,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222895811] [2020-09-25 04:25:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 04:25:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:25:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:25:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:28,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:25:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 04:25:28,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:25:28,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:28,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:28,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:25:28,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:28,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:25:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:28,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:25:28,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:28,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:25:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:28,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222895811] [2020-09-25 04:25:28,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:28,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:28,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483845374] [2020-09-25 04:25:28,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:28,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:28,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:28,314 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 04:25:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:30,476 INFO L93 Difference]: Finished difference Result 1688 states and 2060 transitions. [2020-09-25 04:25:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:30,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 04:25:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:30,490 INFO L225 Difference]: With dead ends: 1688 [2020-09-25 04:25:30,490 INFO L226 Difference]: Without dead ends: 1048 [2020-09-25 04:25:30,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-09-25 04:25:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 950. [2020-09-25 04:25:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 04:25:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1156 transitions. [2020-09-25 04:25:30,565 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1156 transitions. Word has length 154 [2020-09-25 04:25:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:30,566 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1156 transitions. [2020-09-25 04:25:30,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1156 transitions. [2020-09-25 04:25:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 04:25:30,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:30,571 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:25:30,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:30,571 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:30,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1950869366, now seen corresponding path program 1 times [2020-09-25 04:25:30,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:30,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669868295] [2020-09-25 04:25:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:25:35,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:25:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:25:35,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:25:35,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:35,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:25:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:35,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:25:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:35,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:25:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:36,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669868295] [2020-09-25 04:25:36,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:36,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:36,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007163379] [2020-09-25 04:25:36,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:36,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:36,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:36,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:36,010 INFO L87 Difference]: Start difference. First operand 950 states and 1156 transitions. Second operand 7 states. [2020-09-25 04:25:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:38,338 INFO L93 Difference]: Finished difference Result 2534 states and 3210 transitions. [2020-09-25 04:25:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:38,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 04:25:38,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:38,353 INFO L225 Difference]: With dead ends: 2534 [2020-09-25 04:25:38,354 INFO L226 Difference]: Without dead ends: 1608 [2020-09-25 04:25:38,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-09-25 04:25:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1540. [2020-09-25 04:25:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1540 states. [2020-09-25 04:25:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1911 transitions. [2020-09-25 04:25:38,442 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1911 transitions. Word has length 175 [2020-09-25 04:25:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:38,443 INFO L479 AbstractCegarLoop]: Abstraction has 1540 states and 1911 transitions. [2020-09-25 04:25:38,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1911 transitions. [2020-09-25 04:25:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 04:25:38,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:38,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:38,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:38,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:38,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:38,456 INFO L82 PathProgramCache]: Analyzing trace with hash -699904969, now seen corresponding path program 1 times [2020-09-25 04:25:38,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:38,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173841171] [2020-09-25 04:25:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:42,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 04:25:43,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:43,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:25:43,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:25:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:43,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:25:43,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:43,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:25:43,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:43,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:43,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:25:43,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:43,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:25:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:43,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173841171] [2020-09-25 04:25:43,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:43,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:43,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036948910] [2020-09-25 04:25:43,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:43,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:43,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:43,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:43,966 INFO L87 Difference]: Start difference. First operand 1540 states and 1911 transitions. Second operand 7 states. [2020-09-25 04:25:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:46,151 INFO L93 Difference]: Finished difference Result 3526 states and 4468 transitions. [2020-09-25 04:25:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:46,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-25 04:25:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:46,164 INFO L225 Difference]: With dead ends: 3526 [2020-09-25 04:25:46,164 INFO L226 Difference]: Without dead ends: 2010 [2020-09-25 04:25:46,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2020-09-25 04:25:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1979. [2020-09-25 04:25:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-09-25 04:25:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2441 transitions. [2020-09-25 04:25:46,234 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2441 transitions. Word has length 185 [2020-09-25 04:25:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:46,234 INFO L479 AbstractCegarLoop]: Abstraction has 1979 states and 2441 transitions. [2020-09-25 04:25:46,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2441 transitions. [2020-09-25 04:25:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 04:25:46,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:46,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:25:46,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:46,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash -568607469, now seen corresponding path program 1 times [2020-09-25 04:25:46,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:46,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579600225] [2020-09-25 04:25:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:47,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:51,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 04:25:51,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:25:51,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:25:51,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:51,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 04:25:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:51,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:51,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:51,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:51,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:51,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:51,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:51,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:51,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:51,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:51,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:25:51,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:51,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:51,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:25:51,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:51,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:25:51,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:51,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:25:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 04:25:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:51,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:51,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:51,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:25:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:51,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:25:51,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579600225] [2020-09-25 04:25:51,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:51,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:51,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133942788] [2020-09-25 04:25:51,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:51,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:51,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:51,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:51,566 INFO L87 Difference]: Start difference. First operand 1979 states and 2441 transitions. Second operand 7 states. [2020-09-25 04:25:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:53,625 INFO L93 Difference]: Finished difference Result 5201 states and 6556 transitions. [2020-09-25 04:25:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:53,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 04:25:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:53,644 INFO L225 Difference]: With dead ends: 5201 [2020-09-25 04:25:53,645 INFO L226 Difference]: Without dead ends: 3246 [2020-09-25 04:25:53,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 04:25:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2020-09-25 04:25:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2563. [2020-09-25 04:25:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2020-09-25 04:25:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3233 transitions. [2020-09-25 04:25:53,736 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3233 transitions. Word has length 192 [2020-09-25 04:25:53,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:53,736 INFO L479 AbstractCegarLoop]: Abstraction has 2563 states and 3233 transitions. [2020-09-25 04:25:53,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:53,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3233 transitions. [2020-09-25 04:25:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-25 04:25:53,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:53,750 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 04:25:53,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:53,750 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:53,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:53,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2066223812, now seen corresponding path program 1 times [2020-09-25 04:25:53,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:53,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043862759] [2020-09-25 04:25:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking...