/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/Problem10_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:03,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:03,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:03,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:03,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:03,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:03,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:03,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:03,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:03,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:03,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:03,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:03,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:03,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:03,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:03,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:03,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:03,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:03,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:03,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:03,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:03,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:03,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:03,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:03,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:03,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:03,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:03,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:03,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:03,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:03,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:03,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:03,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:03,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:03,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:03,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:03,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:03,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:03,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:03,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:03,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:03,687 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 07:56:03,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:03,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:03,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:03,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:03,715 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:03,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:03,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:03,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:03,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:03,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:03,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:03,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:03,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:03,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:03,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:03,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:03,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:03,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:03,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:03,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:03,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:03,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:03,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:03,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:03,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:03,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:03,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:03,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:03,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:03,720 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 07:56:04,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:04,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:04,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:04,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:04,188 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:04,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 07:56:04,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5543543ca/e90c650dc23d48c98976d0d07498a56f/FLAGb5cc8eee3 [2020-09-25 07:56:04,951 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:04,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 07:56:04,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5543543ca/e90c650dc23d48c98976d0d07498a56f/FLAGb5cc8eee3 [2020-09-25 07:56:05,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5543543ca/e90c650dc23d48c98976d0d07498a56f [2020-09-25 07:56:05,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:05,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:05,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:05,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:05,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:05,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:05,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4957d7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05, skipping insertion in model container [2020-09-25 07:56:05,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:05,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:05,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:05,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:05,801 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:05,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:05,932 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:05,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05 WrapperNode [2020-09-25 07:56:05,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:05,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:05,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:05,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:05,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:05,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:05,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:05,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:06,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:06,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:06,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (1/1) ... [2020-09-25 07:56:06,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:06,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:06,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:06,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:06,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (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 07:56:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:07,566 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:07,566 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:07,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:07 BoogieIcfgContainer [2020-09-25 07:56:07,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:07,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:07,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:07,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:07,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:05" (1/3) ... [2020-09-25 07:56:07,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c504154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:07, skipping insertion in model container [2020-09-25 07:56:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:05" (2/3) ... [2020-09-25 07:56:07,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c504154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:07, skipping insertion in model container [2020-09-25 07:56:07,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:07" (3/3) ... [2020-09-25 07:56:07,587 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2020-09-25 07:56:07,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:07,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:07,632 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:07,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:07,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:07,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:07,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:07,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:07,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:07,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:07,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 07:56:07,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:07,711 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] [2020-09-25 07:56:07,711 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:07,719 INFO L82 PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times [2020-09-25 07:56:07,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:07,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912990279] [2020-09-25 07:56:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:09,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 07:56:09,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:09,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-09-25 07:56:09,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:09,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 07:56:09,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:09,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:56:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:09,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:09,287 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 07:56:09,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912990279] [2020-09-25 07:56:09,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:09,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:56:09,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213772377] [2020-09-25 07:56:09,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:09,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:09,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:09,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:09,330 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 07:56:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:12,447 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 07:56:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:56:12,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-09-25 07:56:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:12,476 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 07:56:12,476 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 07:56:12,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 07:56:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 07:56:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 07:56:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 07:56:12,621 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 74 [2020-09-25 07:56:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:12,622 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 07:56:12,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:12,622 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 07:56:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 07:56:12,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:12,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:12,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:12,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:12,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:12,645 INFO L82 PathProgramCache]: Analyzing trace with hash 607028325, now seen corresponding path program 1 times [2020-09-25 07:56:12,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:12,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442433618] [2020-09-25 07:56:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:17,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 07:56:17,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:56:17,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:17,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:56:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:17,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:17,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:56:17,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:17,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:17,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:18,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:18,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:18,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 07:56:18,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:18,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:56:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:18,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442433618] [2020-09-25 07:56:18,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:18,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:18,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640942337] [2020-09-25 07:56:18,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:18,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:18,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:18,177 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 07:56:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:20,704 INFO L93 Difference]: Finished difference Result 1800 states and 2316 transitions. [2020-09-25 07:56:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:20,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-25 07:56:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:20,714 INFO L225 Difference]: With dead ends: 1800 [2020-09-25 07:56:20,715 INFO L226 Difference]: Without dead ends: 1088 [2020-09-25 07:56:20,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-09-25 07:56:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1040. [2020-09-25 07:56:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-25 07:56:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1243 transitions. [2020-09-25 07:56:20,790 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1243 transitions. Word has length 157 [2020-09-25 07:56:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:20,793 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1243 transitions. [2020-09-25 07:56:20,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1243 transitions. [2020-09-25 07:56:20,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:56:20,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:20,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:20,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:20,806 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:20,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1359580747, now seen corresponding path program 1 times [2020-09-25 07:56:20,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:20,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972716201] [2020-09-25 07:56:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:20,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:25,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:56:25,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4301 [2020-09-25 07:56:25,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:25,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 07:56:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:25,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:25,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:25,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:56:25,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:25,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:25,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 07:56:25,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:25,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:25,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972716201] [2020-09-25 07:56:25,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:25,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:56:25,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763994393] [2020-09-25 07:56:25,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:56:25,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:25,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:56:25,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:25,531 INFO L87 Difference]: Start difference. First operand 1040 states and 1243 transitions. Second operand 6 states. [2020-09-25 07:56:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:28,310 INFO L93 Difference]: Finished difference Result 2916 states and 3682 transitions. [2020-09-25 07:56:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:56:28,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 07:56:28,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:28,327 INFO L225 Difference]: With dead ends: 2916 [2020-09-25 07:56:28,327 INFO L226 Difference]: Without dead ends: 2041 [2020-09-25 07:56:28,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2020-09-25 07:56:28,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1682. [2020-09-25 07:56:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-09-25 07:56:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2131 transitions. [2020-09-25 07:56:28,400 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2131 transitions. Word has length 163 [2020-09-25 07:56:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:28,401 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 2131 transitions. [2020-09-25 07:56:28,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:56:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2131 transitions. [2020-09-25 07:56:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:56:28,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:28,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:28,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:28,406 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:28,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1258573969, now seen corresponding path program 1 times [2020-09-25 07:56:28,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:28,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687679164] [2020-09-25 07:56:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:30,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1633 [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:56:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:30,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:30,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:30,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:30,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:56:30,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:30,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:56:30,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:30,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:56:30,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:30,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 07:56:30,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:30,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:56:30,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:30,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687679164] [2020-09-25 07:56:30,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:30,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:30,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92905975] [2020-09-25 07:56:30,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:30,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:30,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:30,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:30,571 INFO L87 Difference]: Start difference. First operand 1682 states and 2131 transitions. Second operand 7 states. [2020-09-25 07:56:32,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:32,968 INFO L93 Difference]: Finished difference Result 4483 states and 6837 transitions. [2020-09-25 07:56:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:32,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-09-25 07:56:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:33,006 INFO L225 Difference]: With dead ends: 4483 [2020-09-25 07:56:33,006 INFO L226 Difference]: Without dead ends: 2966 [2020-09-25 07:56:33,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-09-25 07:56:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2630. [2020-09-25 07:56:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2630 states. [2020-09-25 07:56:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3452 transitions. [2020-09-25 07:56:33,156 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3452 transitions. Word has length 179 [2020-09-25 07:56:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:33,156 INFO L479 AbstractCegarLoop]: Abstraction has 2630 states and 3452 transitions. [2020-09-25 07:56:33,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3452 transitions. [2020-09-25 07:56:33,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 07:56:33,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:33,164 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:33,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:33,164 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:33,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1134175534, now seen corresponding path program 1 times [2020-09-25 07:56:33,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:33,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236268591] [2020-09-25 07:56:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:38,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 07:56:38,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:56:38,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:38,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:38,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:56:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:38,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:38,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:38,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:38,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:38,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:38,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:38,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:38,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:38,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:38,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 07:56:38,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:38,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:56:38,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:38,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-25 07:56:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:38,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 124 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:56:39,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236268591] [2020-09-25 07:56:39,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:39,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:39,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894229868] [2020-09-25 07:56:39,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:39,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:39,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:39,058 INFO L87 Difference]: Start difference. First operand 2630 states and 3452 transitions. Second operand 9 states. [2020-09-25 07:56:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:43,767 INFO L93 Difference]: Finished difference Result 6215 states and 8433 transitions. [2020-09-25 07:56:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:43,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 246 [2020-09-25 07:56:43,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:43,791 INFO L225 Difference]: With dead ends: 6215 [2020-09-25 07:56:43,791 INFO L226 Difference]: Without dead ends: 3731 [2020-09-25 07:56:43,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2020-09-25 07:56:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3536. [2020-09-25 07:56:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3536 states. [2020-09-25 07:56:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 4559 transitions. [2020-09-25 07:56:43,899 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 4559 transitions. Word has length 246 [2020-09-25 07:56:43,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:43,899 INFO L479 AbstractCegarLoop]: Abstraction has 3536 states and 4559 transitions. [2020-09-25 07:56:43,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 4559 transitions. [2020-09-25 07:56:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 07:56:43,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:43,907 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:43,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:43,908 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1656107147, now seen corresponding path program 1 times [2020-09-25 07:56:43,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:43,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468975485] [2020-09-25 07:56:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 07:56:48,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:56:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:56:48,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:56:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 07:56:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:49,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:49,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:49,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:56:49,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:49,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:49,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:49,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 07:56:49,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:49,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:49,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:49,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:56:49,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 07:56:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:49,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 07:56:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:49,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468975485] [2020-09-25 07:56:49,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:49,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:56:49,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653857782] [2020-09-25 07:56:49,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:49,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:49,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:49,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:49,374 INFO L87 Difference]: Start difference. First operand 3536 states and 4559 transitions. Second operand 7 states. [2020-09-25 07:56:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:52,334 INFO L93 Difference]: Finished difference Result 8710 states and 11466 transitions. [2020-09-25 07:56:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:56:52,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-09-25 07:56:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:52,356 INFO L225 Difference]: With dead ends: 8710 [2020-09-25 07:56:52,357 INFO L226 Difference]: Without dead ends: 4381 [2020-09-25 07:56:52,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 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 07:56:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-09-25 07:56:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3781. [2020-09-25 07:56:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2020-09-25 07:56:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 4721 transitions. [2020-09-25 07:56:52,468 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 4721 transitions. Word has length 257 [2020-09-25 07:56:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:52,469 INFO L479 AbstractCegarLoop]: Abstraction has 3781 states and 4721 transitions. [2020-09-25 07:56:52,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 4721 transitions. [2020-09-25 07:56:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 07:56:52,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:52,475 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:52,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:56:52,476 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:52,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1944800713, now seen corresponding path program 1 times [2020-09-25 07:56:52,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:52,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241303571] [2020-09-25 07:56:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking...