/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:00,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:00,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:00,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:00,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:00,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:00,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:00,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:00,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:00,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:00,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:00,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:00,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:00,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:00,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:00,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:00,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:00,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:00,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:00,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:00,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:00,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:00,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:00,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:00,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:00,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:00,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:00,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:00,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:00,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:00,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:00,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:00,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:00,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:00,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:00,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:00,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:00,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:00,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:00,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:00,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:00,823 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 12:22:00,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:00,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:00,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:00,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:00,888 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:00,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:00,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:00,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:00,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:00,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:00,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:00,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:00,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:00,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:00,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:00,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:00,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:00,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:00,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:00,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:00,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:00,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:00,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:00,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:00,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:00,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:00,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:00,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:00,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:00,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:22:01,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:01,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:01,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:01,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:01,444 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:01,445 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 12:22:01,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e9734ce/533d6ac34c7f4c21931a608183d8cc83/FLAG23b551bf8 [2020-09-25 12:22:02,196 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:02,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 12:22:02,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e9734ce/533d6ac34c7f4c21931a608183d8cc83/FLAG23b551bf8 [2020-09-25 12:22:02,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e9734ce/533d6ac34c7f4c21931a608183d8cc83 [2020-09-25 12:22:02,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:02,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:02,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:02,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:02,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:02,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:02" (1/1) ... [2020-09-25 12:22:02,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:02, skipping insertion in model container [2020-09-25 12:22:02,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:02" (1/1) ... [2020-09-25 12:22:02,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:02,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:03,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:03,012 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:03,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:03,266 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:03,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03 WrapperNode [2020-09-25 12:22:03,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:03,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:03,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:03,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:03,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:03,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:03,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:03,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:03,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (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 12:22:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:04,876 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:04,876 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:04,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:04 BoogieIcfgContainer [2020-09-25 12:22:04,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:04,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:04,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:04,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:04,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:02" (1/3) ... [2020-09-25 12:22:04,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:04, skipping insertion in model container [2020-09-25 12:22:04,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (2/3) ... [2020-09-25 12:22:04,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:04, skipping insertion in model container [2020-09-25 12:22:04,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:04" (3/3) ... [2020-09-25 12:22:04,895 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 12:22:04,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:04,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:04,940 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:04,975 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:04,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:04,975 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:04,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:04,976 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:04,976 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:04,976 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:04,976 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 12:22:05,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:05,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:05,032 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:05,040 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 12:22:05,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:05,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-25 12:22:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:05,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 12:22:10,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:22:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:22:10,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:22:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:22:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:22:10,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:10,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:10,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:10,758 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 12:22:10,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-25 12:22:10,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:10,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:22:10,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763625041] [2020-09-25 12:22:10,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:10,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:10,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:10,799 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:22:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:13,566 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 12:22:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:22:13,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 12:22:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:13,608 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 12:22:13,608 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 12:22:13,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:13,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 12:22:13,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 12:22:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 12:22:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 12:22:13,751 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 143 [2020-09-25 12:22:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:13,752 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 12:22:13,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 12:22:13,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 12:22:13,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:13,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:13,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:13,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:13,766 INFO L82 PathProgramCache]: Analyzing trace with hash -581235324, now seen corresponding path program 1 times [2020-09-25 12:22:13,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:13,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258284911] [2020-09-25 12:22:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:18,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:18,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:22:18,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:18,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:22:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:18,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:22:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:22:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:19,398 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-09-25 12:22:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:19,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:19,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:19,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:19,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:19,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:19,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:19,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:19,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:19,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:19,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 12:22:19,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:19,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:22:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:19,834 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 12:22:19,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258284911] [2020-09-25 12:22:19,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:19,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:22:19,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505401450] [2020-09-25 12:22:19,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:22:19,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:19,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:22:19,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:22:19,839 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 9 states. [2020-09-25 12:22:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:24,989 INFO L93 Difference]: Finished difference Result 2047 states and 2680 transitions. [2020-09-25 12:22:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:22:24,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-09-25 12:22:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:25,001 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 12:22:25,001 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 12:22:25,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:22:25,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 12:22:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 12:22:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 12:22:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1169 transitions. [2020-09-25 12:22:25,075 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1169 transitions. Word has length 164 [2020-09-25 12:22:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:25,075 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1169 transitions. [2020-09-25 12:22:25,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:22:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1169 transitions. [2020-09-25 12:22:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 12:22:25,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:25,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:25,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:25,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:25,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1195548531, now seen corresponding path program 1 times [2020-09-25 12:22:25,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:25,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921192174] [2020-09-25 12:22:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:30,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:22:30,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:22:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 12:22:30,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:30,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 12:22:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 12:22:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:30,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:30,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:30,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:22:30,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:30,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:30,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:30,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:30,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:30,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:22:30,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:30,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:22:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:30,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921192174] [2020-09-25 12:22:30,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:30,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:30,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355637285] [2020-09-25 12:22:30,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:30,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:30,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:30,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:30,445 INFO L87 Difference]: Start difference. First operand 1003 states and 1169 transitions. Second operand 5 states. [2020-09-25 12:22:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:32,138 INFO L93 Difference]: Finished difference Result 2467 states and 2981 transitions. [2020-09-25 12:22:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:32,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 12:22:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:32,154 INFO L225 Difference]: With dead ends: 2467 [2020-09-25 12:22:32,156 INFO L226 Difference]: Without dead ends: 1488 [2020-09-25 12:22:32,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 12:22:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2020-09-25 12:22:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1291. [2020-09-25 12:22:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-09-25 12:22:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1537 transitions. [2020-09-25 12:22:32,230 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1537 transitions. Word has length 168 [2020-09-25 12:22:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:32,232 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1537 transitions. [2020-09-25 12:22:32,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1537 transitions. [2020-09-25 12:22:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 12:22:32,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:32,242 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:32,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:32,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:32,243 INFO L82 PathProgramCache]: Analyzing trace with hash -390929757, now seen corresponding path program 1 times [2020-09-25 12:22:32,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:32,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879263031] [2020-09-25 12:22:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:32,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:32,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:37,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 12:22:37,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:22:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:22:37,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:37,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:22:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:22:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:37,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:22:37,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:37,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:37,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:37,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:22:37,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:37,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:22:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 12:22:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:37,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:22:37,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 12:22:37,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:37,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:22:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:22:37,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879263031] [2020-09-25 12:22:37,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:37,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:22:37,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895932096] [2020-09-25 12:22:37,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:22:37,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:37,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:22:37,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:37,653 INFO L87 Difference]: Start difference. First operand 1291 states and 1537 transitions. Second operand 7 states. [2020-09-25 12:22:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:39,731 INFO L93 Difference]: Finished difference Result 3624 states and 4458 transitions. [2020-09-25 12:22:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:22:39,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-09-25 12:22:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:39,746 INFO L225 Difference]: With dead ends: 3624 [2020-09-25 12:22:39,746 INFO L226 Difference]: Without dead ends: 2357 [2020-09-25 12:22:39,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:22:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2020-09-25 12:22:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2106. [2020-09-25 12:22:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-09-25 12:22:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2547 transitions. [2020-09-25 12:22:39,829 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2547 transitions. Word has length 209 [2020-09-25 12:22:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:39,830 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 2547 transitions. [2020-09-25 12:22:39,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:22:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2547 transitions. [2020-09-25 12:22:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 12:22:39,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:39,841 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:39,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:39,841 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:39,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-25 12:22:39,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:39,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923327477] [2020-09-25 12:22:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:44,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:44,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 12:22:44,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:22:44,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:22:44,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:44,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:22:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:22:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 12:22:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:45,375 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-09-25 12:22:45,593 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-09-25 12:22:45,802 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-09-25 12:22:45,993 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2020-09-25 12:22:46,191 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-09-25 12:22:46,377 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2020-09-25 12:22:46,546 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2020-09-25 12:22:46,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:46,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:46,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:22:46,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:46,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:46,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:22:46,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:46,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:46,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:22:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 12:22:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:46,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:22:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:46,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:22:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 12:22:46,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:46,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:22:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:22:46,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:22:47,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923327477] [2020-09-25 12:22:47,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:47,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 12:22:47,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579090534] [2020-09-25 12:22:47,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 12:22:47,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:47,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 12:22:47,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:22:47,294 INFO L87 Difference]: Start difference. First operand 2106 states and 2547 transitions. Second operand 22 states.