/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:53:00,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:53:00,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:53:00,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:53:00,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:53:00,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:53:00,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:53:00,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:53:00,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:53:00,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:53:00,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:53:00,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:53:00,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:53:00,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:53:00,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:53:00,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:53:00,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:53:00,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:53:00,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:53:00,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:53:00,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:53:00,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:53:00,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:53:00,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:53:00,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:53:00,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:53:00,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:53:00,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:53:00,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:53:00,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:53:00,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:53:00,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:53:00,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:53:00,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:53:00,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:53:00,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:53:00,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:53:00,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:53:00,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:53:00,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:53:00,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:53:00,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:53:00,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:53:00,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:53:00,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:53:00,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:53:00,724 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:53:00,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:53:00,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:53:00,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:53:00,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:53:00,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:53:00,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:53:00,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:53:00,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:53:00,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:53:00,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:53:00,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:53:00,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:53:00,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:53:00,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:53:00,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:53:00,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:53:00,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:53:00,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:53:00,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:53:00,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:53:00,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:53:00,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:53:00,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:53:00,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:53:00,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:53:01,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:53:01,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:53:01,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:53:01,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:53:01,208 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:53:01,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 07:53:01,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/288cebc1b/6af4ae1426a54bb790d16b029b6141b1/FLAG5f1d6981b [2020-09-25 07:53:01,967 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:53:01,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 07:53:01,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/288cebc1b/6af4ae1426a54bb790d16b029b6141b1/FLAG5f1d6981b [2020-09-25 07:53:02,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/288cebc1b/6af4ae1426a54bb790d16b029b6141b1 [2020-09-25 07:53:02,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:53:02,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:53:02,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:53:02,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:53:02,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:53:02,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:53:02" (1/1) ... [2020-09-25 07:53:02,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6664016e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:02, skipping insertion in model container [2020-09-25 07:53:02,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:53:02" (1/1) ... [2020-09-25 07:53:02,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:53:02,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:53:02,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:53:02,890 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:53:03,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:53:03,044 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:53:03,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03 WrapperNode [2020-09-25 07:53:03,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:53:03,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:53:03,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:53:03,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:53:03,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (1/1) ... [2020-09-25 07:53:03,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (1/1) ... [2020-09-25 07:53:03,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (1/1) ... [2020-09-25 07:53:03,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (1/1) ... [2020-09-25 07:53:03,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (1/1) ... [2020-09-25 07:53:03,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (1/1) ... [2020-09-25 07:53:03,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (1/1) ... [2020-09-25 07:53:03,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:53:03,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:53:03,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:53:03,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:53:03,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (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 07:53:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:53:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:53:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:53:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:53:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:53:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:53:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:53:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:53:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:53:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:53:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:53:04,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:53:04,608 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:53:04,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:53:04 BoogieIcfgContainer [2020-09-25 07:53:04,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:53:04,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:53:04,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:53:04,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:53:04,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:53:02" (1/3) ... [2020-09-25 07:53:04,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1517a4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:53:04, skipping insertion in model container [2020-09-25 07:53:04,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:53:03" (2/3) ... [2020-09-25 07:53:04,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1517a4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:53:04, skipping insertion in model container [2020-09-25 07:53:04,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:53:04" (3/3) ... [2020-09-25 07:53:04,630 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label10.c [2020-09-25 07:53:04,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:53:04,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:53:04,679 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:53:04,717 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:53:04,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:53:04,717 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:53:04,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:53:04,718 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:53:04,718 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:53:04,718 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:53:04,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:53:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:53:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 07:53:04,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:04,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:04,779 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:04,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2114164186, now seen corresponding path program 1 times [2020-09-25 07:53:04,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:04,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532993932] [2020-09-25 07:53:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:05,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 07:53:10,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:53:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 07:53:10,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:10,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:10,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:53:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 07:53:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 07:53:10,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:53:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:10,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:53:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:10,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532993932] [2020-09-25 07:53:10,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:53:10,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:53:10,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682788904] [2020-09-25 07:53:10,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:10,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:10,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:10,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:10,675 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 07:53:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:13,685 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 07:53:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:53:13,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 07:53:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:13,714 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 07:53:13,714 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 07:53:13,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 07:53:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 07:53:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 07:53:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 07:53:13,860 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 161 [2020-09-25 07:53:13,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:13,861 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 07:53:13,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 07:53:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:53:13,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:13,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:13,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:53:13,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:13,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:13,872 INFO L82 PathProgramCache]: Analyzing trace with hash -880282106, now seen corresponding path program 1 times [2020-09-25 07:53:13,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:13,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738111549] [2020-09-25 07:53:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:18,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 07:53:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:53:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 07:53:18,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:18,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:53:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 07:53:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:53:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:19,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:19,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:19,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:53:19,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:53:19,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:19,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:53:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:19,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738111549] [2020-09-25 07:53:19,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:19,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:19,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440992621] [2020-09-25 07:53:19,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:19,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:19,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:19,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:19,194 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 07:53:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:21,175 INFO L93 Difference]: Finished difference Result 2199 states and 2857 transitions. [2020-09-25 07:53:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:21,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 07:53:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:21,191 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 07:53:21,192 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 07:53:21,196 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 07:53:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 07:53:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1330. [2020-09-25 07:53:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 07:53:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1680 transitions. [2020-09-25 07:53:21,254 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1680 transitions. Word has length 179 [2020-09-25 07:53:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:21,255 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1680 transitions. [2020-09-25 07:53:21,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1680 transitions. [2020-09-25 07:53:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 07:53:21,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:21,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:21,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:53:21,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1103327617, now seen corresponding path program 1 times [2020-09-25 07:53:21,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:21,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507320978] [2020-09-25 07:53:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:26,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 07:53:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:53:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:53:26,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:26,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:53:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:53:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 07:53:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:26,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:53:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:26,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:53:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:26,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:26,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:53:26,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:53:26,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 07:53:26,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:26,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:53:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:53:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:53:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:27,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507320978] [2020-09-25 07:53:27,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:27,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:53:27,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83479714] [2020-09-25 07:53:27,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:53:27,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:53:27,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:53:27,198 INFO L87 Difference]: Start difference. First operand 1330 states and 1680 transitions. Second operand 12 states. [2020-09-25 07:53:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:30,644 INFO L93 Difference]: Finished difference Result 3810 states and 5056 transitions. [2020-09-25 07:53:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:53:30,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-09-25 07:53:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:30,662 INFO L225 Difference]: With dead ends: 3810 [2020-09-25 07:53:30,663 INFO L226 Difference]: Without dead ends: 1432 [2020-09-25 07:53:30,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:53:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-09-25 07:53:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1419. [2020-09-25 07:53:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2020-09-25 07:53:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1740 transitions. [2020-09-25 07:53:30,735 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1740 transitions. Word has length 195 [2020-09-25 07:53:30,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:30,735 INFO L479 AbstractCegarLoop]: Abstraction has 1419 states and 1740 transitions. [2020-09-25 07:53:30,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:53:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1740 transitions. [2020-09-25 07:53:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 07:53:30,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:30,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:30,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:53:30,755 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:30,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1228146501, now seen corresponding path program 1 times [2020-09-25 07:53:30,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:30,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216610972] [2020-09-25 07:53:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 07:53:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:53:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:53:35,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:35,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:53:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:53:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:53:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:53:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:36,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:36,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:36,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:36,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:36,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 07:53:36,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:36,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:53:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:36,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216610972] [2020-09-25 07:53:36,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:36,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:53:36,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046063326] [2020-09-25 07:53:36,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:53:36,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:53:36,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:53:36,446 INFO L87 Difference]: Start difference. First operand 1419 states and 1740 transitions. Second operand 8 states. [2020-09-25 07:53:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:40,242 INFO L93 Difference]: Finished difference Result 3940 states and 5052 transitions. [2020-09-25 07:53:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:53:40,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-25 07:53:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:40,256 INFO L225 Difference]: With dead ends: 3940 [2020-09-25 07:53:40,256 INFO L226 Difference]: Without dead ends: 2434 [2020-09-25 07:53:40,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:53:40,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-09-25 07:53:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2378. [2020-09-25 07:53:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2378 states. [2020-09-25 07:53:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 2879 transitions. [2020-09-25 07:53:40,330 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 2879 transitions. Word has length 199 [2020-09-25 07:53:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:40,330 INFO L479 AbstractCegarLoop]: Abstraction has 2378 states and 2879 transitions. [2020-09-25 07:53:40,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:53:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 2879 transitions. [2020-09-25 07:53:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 07:53:40,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:40,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:53:40,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:53:40,341 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:40,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1714662301, now seen corresponding path program 1 times [2020-09-25 07:53:40,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:40,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743126171] [2020-09-25 07:53:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:43,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:45,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 07:53:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:53:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:53:45,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:45,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 07:53:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 07:53:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:45,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:45,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:45,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:53:45,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:45,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:45,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:45,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:53:45,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:53:45,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:45,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:53:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:45,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:45,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:53:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:53:45,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:45,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:53:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:53:45,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743126171] [2020-09-25 07:53:45,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:45,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:45,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043463329] [2020-09-25 07:53:45,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:45,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:45,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:45,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:45,656 INFO L87 Difference]: Start difference. First operand 2378 states and 2879 transitions. Second operand 5 states. [2020-09-25 07:53:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:47,177 INFO L93 Difference]: Finished difference Result 2400 states and 2914 transitions. [2020-09-25 07:53:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:47,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-09-25 07:53:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:47,190 INFO L225 Difference]: With dead ends: 2400 [2020-09-25 07:53:47,191 INFO L226 Difference]: Without dead ends: 2398 [2020-09-25 07:53:47,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 07:53:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2020-09-25 07:53:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2378. [2020-09-25 07:53:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2378 states. [2020-09-25 07:53:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 2878 transitions. [2020-09-25 07:53:47,258 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 2878 transitions. Word has length 223 [2020-09-25 07:53:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:47,259 INFO L479 AbstractCegarLoop]: Abstraction has 2378 states and 2878 transitions. [2020-09-25 07:53:47,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 2878 transitions. [2020-09-25 07:53:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 07:53:47,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:47,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:47,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:47,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2144981535, now seen corresponding path program 1 times [2020-09-25 07:53:47,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:47,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274247978] [2020-09-25 07:53:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:47,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking...