/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=0.6 --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/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:46,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:46,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:46,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:46,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:46,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:46,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:46,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:46,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:46,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:46,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:46,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:46,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:46,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:46,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:46,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:46,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:46,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:46,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:46,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:46,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:46,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:46,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:46,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:46,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:46,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:46,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:46,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:46,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:46,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:46,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:46,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:46,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:46,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:46,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:46,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:46,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:46,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:46,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:46,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:46,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:46,766 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 06:47:46,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:46,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:46,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:46,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:46,794 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:46,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:46,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:46,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:46,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:46,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:46,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:46,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:46,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:46,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:46,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:46,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:46,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:46,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:46,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:46,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:46,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:46,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:46,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:46,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:46,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:46,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:46,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:46,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:46,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:46,799 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:47,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:47,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:47,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:47,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:47,306 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:47,308 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 06:47:47,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a68228d/7ac9bd0a9da84b89b45143a4fcacc211/FLAG1238ee58b [2020-09-25 06:47:48,047 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:48,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 06:47:48,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a68228d/7ac9bd0a9da84b89b45143a4fcacc211/FLAG1238ee58b [2020-09-25 06:47:48,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a68228d/7ac9bd0a9da84b89b45143a4fcacc211 [2020-09-25 06:47:48,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:48,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:48,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:48,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:48,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:48,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:48" (1/1) ... [2020-09-25 06:47:48,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654c884d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:48, skipping insertion in model container [2020-09-25 06:47:48,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:48" (1/1) ... [2020-09-25 06:47:48,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:48,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:49,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:49,087 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:49,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:49,272 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:49,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49 WrapperNode [2020-09-25 06:47:49,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:49,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:49,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:49,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:49,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (1/1) ... [2020-09-25 06:47:49,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (1/1) ... [2020-09-25 06:47:49,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (1/1) ... [2020-09-25 06:47:49,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (1/1) ... [2020-09-25 06:47:49,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (1/1) ... [2020-09-25 06:47:49,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (1/1) ... [2020-09-25 06:47:49,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (1/1) ... [2020-09-25 06:47:49,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:49,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:49,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:49,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:49,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (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 06:47:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:51,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:51,009 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:51,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:51 BoogieIcfgContainer [2020-09-25 06:47:51,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:51,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:51,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:51,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:51,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:48" (1/3) ... [2020-09-25 06:47:51,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dabe7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:51, skipping insertion in model container [2020-09-25 06:47:51,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:49" (2/3) ... [2020-09-25 06:47:51,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dabe7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:51, skipping insertion in model container [2020-09-25 06:47:51,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:51" (3/3) ... [2020-09-25 06:47:51,031 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 06:47:51,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:51,056 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:51,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:51,119 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:51,119 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:51,119 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:51,119 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:51,119 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:51,120 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:51,120 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:51,120 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:47:51,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:51,166 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] [2020-09-25 06:47:51,167 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:51,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 06:47:51,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:51,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118137995] [2020-09-25 06:47:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:52,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 06:47:52,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:52,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-09-25 06:47:52,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:52,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 06:47:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:53,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:53,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:47:53,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:53,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:53,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:53,025 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 06:47:53,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118137995] [2020-09-25 06:47:53,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:53,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:53,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607299160] [2020-09-25 06:47:53,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:53,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:53,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:53,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:53,058 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:55,239 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 06:47:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:55,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 06:47:55,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:55,265 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 06:47:55,265 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 06:47:55,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 06:47:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 06:47:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 06:47:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 06:47:55,381 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 63 [2020-09-25 06:47:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:55,382 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 06:47:55,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 06:47:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 06:47:55,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:55,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:55,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:55,392 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 06:47:55,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:55,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084598323] [2020-09-25 06:47:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:48:00,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:48:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:48:00,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:00,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:00,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:48:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:48:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:00,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:00,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:00,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:00,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:48:00,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:00,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:48:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:00,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:00,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 06:48:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:00,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:00,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084598323] [2020-09-25 06:48:00,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:00,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:00,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519638604] [2020-09-25 06:48:00,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:00,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:00,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:00,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:00,890 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 06:48:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:02,988 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 06:48:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:48:02,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 06:48:02,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:02,994 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 06:48:02,994 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 06:48:02,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:48:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 06:48:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 06:48:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 06:48:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 06:48:03,037 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 146 [2020-09-25 06:48:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:03,038 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 06:48:03,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 06:48:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 06:48:03,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:03,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:03,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:03,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:03,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:03,049 INFO L82 PathProgramCache]: Analyzing trace with hash -651267958, now seen corresponding path program 1 times [2020-09-25 06:48:03,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:03,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957108952] [2020-09-25 06:48:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:48:08,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:48:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:48:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:08,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:08,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:48:08,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:08,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:08,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:48:08,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:08,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:08,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 06:48:08,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:08,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:08,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:08,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957108952] [2020-09-25 06:48:08,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:08,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:08,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215119574] [2020-09-25 06:48:08,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:08,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:08,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:08,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:08,434 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 7 states. [2020-09-25 06:48:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:10,727 INFO L93 Difference]: Finished difference Result 1826 states and 2362 transitions. [2020-09-25 06:48:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:10,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 06:48:10,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:10,739 INFO L225 Difference]: With dead ends: 1826 [2020-09-25 06:48:10,739 INFO L226 Difference]: Without dead ends: 1110 [2020-09-25 06:48:10,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-09-25 06:48:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1046. [2020-09-25 06:48:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 06:48:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1252 transitions. [2020-09-25 06:48:10,807 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1252 transitions. Word has length 146 [2020-09-25 06:48:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:10,808 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1252 transitions. [2020-09-25 06:48:10,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1252 transitions. [2020-09-25 06:48:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 06:48:10,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:10,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:10,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:10,824 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 06:48:10,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:10,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065634229] [2020-09-25 06:48:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:15,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 06:48:15,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:48:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:48:15,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:15,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:48:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:48:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:15,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:15,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:15,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:48:15,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:15,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:16,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:16,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:16,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 06:48:16,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:16,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:16,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065634229] [2020-09-25 06:48:16,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:16,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:48:16,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918001039] [2020-09-25 06:48:16,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:48:16,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:16,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:48:16,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:48:16,163 INFO L87 Difference]: Start difference. First operand 1046 states and 1252 transitions. Second operand 6 states. [2020-09-25 06:48:18,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:18,987 INFO L93 Difference]: Finished difference Result 2934 states and 3718 transitions. [2020-09-25 06:48:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:48:18,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-09-25 06:48:18,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:19,000 INFO L225 Difference]: With dead ends: 2934 [2020-09-25 06:48:19,001 INFO L226 Difference]: Without dead ends: 2053 [2020-09-25 06:48:19,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2020-09-25 06:48:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1692. [2020-09-25 06:48:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-09-25 06:48:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2151 transitions. [2020-09-25 06:48:19,060 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2151 transitions. Word has length 152 [2020-09-25 06:48:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:19,061 INFO L479 AbstractCegarLoop]: Abstraction has 1692 states and 2151 transitions. [2020-09-25 06:48:19,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:48:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2151 transitions. [2020-09-25 06:48:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 06:48:19,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:19,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:19,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:19,065 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:19,065 INFO L82 PathProgramCache]: Analyzing trace with hash 871237888, now seen corresponding path program 1 times [2020-09-25 06:48:19,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:19,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362897623] [2020-09-25 06:48:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 06:48:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:48:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-09-25 06:48:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:21,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:48:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:21,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:21,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:48:21,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:21,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:21,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:48:21,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 06:48:21,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:21,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:48:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:21,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362897623] [2020-09-25 06:48:21,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:21,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:21,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781006713] [2020-09-25 06:48:21,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:21,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:21,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:21,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:21,481 INFO L87 Difference]: Start difference. First operand 1692 states and 2151 transitions. Second operand 7 states. [2020-09-25 06:48:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:23,769 INFO L93 Difference]: Finished difference Result 4251 states and 5946 transitions. [2020-09-25 06:48:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:23,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-09-25 06:48:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:23,787 INFO L225 Difference]: With dead ends: 4251 [2020-09-25 06:48:23,787 INFO L226 Difference]: Without dead ends: 2724 [2020-09-25 06:48:23,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2020-09-25 06:48:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2644. [2020-09-25 06:48:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-09-25 06:48:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3497 transitions. [2020-09-25 06:48:23,888 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3497 transitions. Word has length 168 [2020-09-25 06:48:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:23,889 INFO L479 AbstractCegarLoop]: Abstraction has 2644 states and 3497 transitions. [2020-09-25 06:48:23,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3497 transitions. [2020-09-25 06:48:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 06:48:23,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:23,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:23,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:23,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1994523964, now seen corresponding path program 1 times [2020-09-25 06:48:23,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:23,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017102172] [2020-09-25 06:48:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:26,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:28,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:28,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 06:48:28,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:48:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:48:28,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:28,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:28,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:28,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:28,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:48:28,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:29,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:29,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:48:29,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 06:48:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:29,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:29,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 06:48:29,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:29,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:29,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017102172] [2020-09-25 06:48:29,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:29,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:29,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328625589] [2020-09-25 06:48:29,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:29,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:29,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:29,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:29,448 INFO L87 Difference]: Start difference. First operand 2644 states and 3497 transitions. Second operand 7 states. [2020-09-25 06:48:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:31,889 INFO L93 Difference]: Finished difference Result 5955 states and 8232 transitions. [2020-09-25 06:48:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:31,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-09-25 06:48:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:31,912 INFO L225 Difference]: With dead ends: 5955 [2020-09-25 06:48:31,912 INFO L226 Difference]: Without dead ends: 2666 [2020-09-25 06:48:31,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-09-25 06:48:32,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2592. [2020-09-25 06:48:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2592 states. [2020-09-25 06:48:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3324 transitions. [2020-09-25 06:48:32,015 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3324 transitions. Word has length 235 [2020-09-25 06:48:32,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:32,015 INFO L479 AbstractCegarLoop]: Abstraction has 2592 states and 3324 transitions. [2020-09-25 06:48:32,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3324 transitions. [2020-09-25 06:48:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 06:48:32,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:32,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:32,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:32,021 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:32,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1921690121, now seen corresponding path program 1 times [2020-09-25 06:48:32,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:32,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740956221] [2020-09-25 06:48:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:32,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking...