/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:18,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:18,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:18,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:18,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:18,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:18,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:18,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:18,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:18,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:18,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:18,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:18,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:18,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:18,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:18,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:18,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:18,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:18,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:18,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:18,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:18,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:18,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:18,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:18,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:18,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:18,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:18,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:18,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:18,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:18,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:18,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:18,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:18,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:18,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:18,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:18,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:18,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:18,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:18,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:18,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:18,873 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 05:36:18,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:18,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:18,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:18,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:18,919 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:18,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:18,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:18,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:18,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:18,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:18,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:18,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:18,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:18,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:18,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:18,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:18,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:18,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:18,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:18,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:18,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:18,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:18,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:18,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:18,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:18,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:18,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:18,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:18,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:18,925 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:36:19,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:19,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:19,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:19,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:19,419 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:19,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 05:36:19,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffa7cd749/c4e10defe96846de949603f7d04c7b0f/FLAG0202934cc [2020-09-25 05:36:20,128 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:20,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 05:36:20,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffa7cd749/c4e10defe96846de949603f7d04c7b0f/FLAG0202934cc [2020-09-25 05:36:20,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffa7cd749/c4e10defe96846de949603f7d04c7b0f [2020-09-25 05:36:20,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:20,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:20,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:20,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:20,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:20,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:20" (1/1) ... [2020-09-25 05:36:20,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249e641f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:20, skipping insertion in model container [2020-09-25 05:36:20,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:20" (1/1) ... [2020-09-25 05:36:20,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:20,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:20,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:20,929 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:21,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:21,151 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:21,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21 WrapperNode [2020-09-25 05:36:21,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:21,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:21,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:21,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:21,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (1/1) ... [2020-09-25 05:36:21,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (1/1) ... [2020-09-25 05:36:21,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (1/1) ... [2020-09-25 05:36:21,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (1/1) ... [2020-09-25 05:36:21,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (1/1) ... [2020-09-25 05:36:21,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (1/1) ... [2020-09-25 05:36:21,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (1/1) ... [2020-09-25 05:36:21,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:21,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:21,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:21,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:21,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (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 05:36:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:36:22,675 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:36:22,675 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:36:22,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:22 BoogieIcfgContainer [2020-09-25 05:36:22,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:36:22,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:36:22,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:36:22,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:36:22,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:20" (1/3) ... [2020-09-25 05:36:22,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ff13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:22, skipping insertion in model container [2020-09-25 05:36:22,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:21" (2/3) ... [2020-09-25 05:36:22,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ff13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:22, skipping insertion in model container [2020-09-25 05:36:22,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:22" (3/3) ... [2020-09-25 05:36:22,696 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label31.c [2020-09-25 05:36:22,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:36:22,719 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:36:22,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:36:22,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:36:22,781 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:36:22,781 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:36:22,781 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:36:22,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:36:22,782 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:36:22,782 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:36:22,782 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:36:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:36:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 05:36:22,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:22,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:22,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1921303583, now seen corresponding path program 1 times [2020-09-25 05:36:22,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:22,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286997687] [2020-09-25 05:36:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:24,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:24,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:28,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:28,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:36:28,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:36:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:36:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:28,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:36:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 05:36:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:36:28,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:28,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:28,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:28,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:28,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:36:28,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:28,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:36:28,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:28,394 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 05:36:28,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286997687] [2020-09-25 05:36:28,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:28,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:28,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540696602] [2020-09-25 05:36:28,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:28,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:28,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:28,426 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:36:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:30,676 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 05:36:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:36:30,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-25 05:36:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:30,717 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 05:36:30,717 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 05:36:30,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 05:36:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 05:36:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 05:36:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 05:36:30,907 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 142 [2020-09-25 05:36:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:30,911 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 05:36:30,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:36:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 05:36:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 05:36:30,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:30,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:30,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:36:30,925 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash -377236683, now seen corresponding path program 1 times [2020-09-25 05:36:30,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:30,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29806732] [2020-09-25 05:36:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:31,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 05:36:36,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:36:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:36:36,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:36,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:36:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:36:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:36,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:36,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:36,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:36:36,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:36,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:36,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:36,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:36:36,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:36,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:36:36,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:36,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:36,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:36:36,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:36,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29806732] [2020-09-25 05:36:36,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:36,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:36,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144384238] [2020-09-25 05:36:36,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:36,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:36,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:36,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:36,209 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 05:36:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:37,969 INFO L93 Difference]: Finished difference Result 1609 states and 2063 transitions. [2020-09-25 05:36:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:37,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 05:36:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:37,981 INFO L225 Difference]: With dead ends: 1609 [2020-09-25 05:36:37,981 INFO L226 Difference]: Without dead ends: 972 [2020-09-25 05:36:37,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-25 05:36:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 810. [2020-09-25 05:36:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-09-25 05:36:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1037 transitions. [2020-09-25 05:36:38,037 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1037 transitions. Word has length 160 [2020-09-25 05:36:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:38,038 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1037 transitions. [2020-09-25 05:36:38,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1037 transitions. [2020-09-25 05:36:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 05:36:38,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:38,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:38,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:36:38,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash -880736070, now seen corresponding path program 1 times [2020-09-25 05:36:38,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:38,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174175125] [2020-09-25 05:36:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:43,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:43,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 05:36:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:36:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:36:43,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:43,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:36:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 05:36:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:43,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:43,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:43,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:36:43,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:36:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:43,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:36:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-09-25 05:36:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:43,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174175125] [2020-09-25 05:36:43,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:43,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:43,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621371976] [2020-09-25 05:36:43,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:43,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:43,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:43,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:43,402 INFO L87 Difference]: Start difference. First operand 810 states and 1037 transitions. Second operand 5 states. [2020-09-25 05:36:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:45,268 INFO L93 Difference]: Finished difference Result 2061 states and 2780 transitions. [2020-09-25 05:36:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:45,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 05:36:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:45,277 INFO L225 Difference]: With dead ends: 2061 [2020-09-25 05:36:45,278 INFO L226 Difference]: Without dead ends: 1273 [2020-09-25 05:36:45,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-09-25 05:36:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1263. [2020-09-25 05:36:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-09-25 05:36:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1657 transitions. [2020-09-25 05:36:45,327 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1657 transitions. Word has length 168 [2020-09-25 05:36:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:45,328 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1657 transitions. [2020-09-25 05:36:45,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1657 transitions. [2020-09-25 05:36:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 05:36:45,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:45,337 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:45,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:36:45,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:45,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1512218259, now seen corresponding path program 1 times [2020-09-25 05:36:45,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:45,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552215217] [2020-09-25 05:36:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:45,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:50,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 05:36:50,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:50,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:36:50,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:50,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 05:36:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:36:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:50,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:50,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:50,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:36:50,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:50,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:50,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:36:50,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:36:50,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:50,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:36:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 05:36:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:36:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:36:50,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:50,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:36:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:36:50,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552215217] [2020-09-25 05:36:50,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:50,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:50,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655025147] [2020-09-25 05:36:50,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:50,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:50,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:50,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:50,703 INFO L87 Difference]: Start difference. First operand 1263 states and 1657 transitions. Second operand 7 states. [2020-09-25 05:36:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:53,696 INFO L93 Difference]: Finished difference Result 3527 states and 5162 transitions. [2020-09-25 05:36:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:36:53,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 05:36:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:53,714 INFO L225 Difference]: With dead ends: 3527 [2020-09-25 05:36:53,715 INFO L226 Difference]: Without dead ends: 2286 [2020-09-25 05:36:53,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 05:36:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2020-09-25 05:36:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 2054. [2020-09-25 05:36:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-09-25 05:36:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2618 transitions. [2020-09-25 05:36:53,809 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2618 transitions. Word has length 217 [2020-09-25 05:36:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:53,809 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2618 transitions. [2020-09-25 05:36:53,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2618 transitions. [2020-09-25 05:36:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 05:36:53,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:53,820 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:53,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:36:53,820 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash -144447401, now seen corresponding path program 1 times [2020-09-25 05:36:53,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:53,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185087299] [2020-09-25 05:36:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:58,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:58,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 05:36:58,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:36:58,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:58,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 05:36:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:36:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:58,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:36:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:58,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:58,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:59,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:36:59,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:59,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:36:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:36:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:59,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:36:59,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 05:36:59,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:59,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:36:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:36:59,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185087299] [2020-09-25 05:36:59,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:59,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:36:59,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362601378] [2020-09-25 05:36:59,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:36:59,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:59,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:36:59,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:36:59,200 INFO L87 Difference]: Start difference. First operand 2054 states and 2618 transitions. Second operand 8 states. [2020-09-25 05:37:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:02,210 INFO L93 Difference]: Finished difference Result 5390 states and 7310 transitions. [2020-09-25 05:37:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:37:02,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-09-25 05:37:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:02,232 INFO L225 Difference]: With dead ends: 5390 [2020-09-25 05:37:02,232 INFO L226 Difference]: Without dead ends: 3368 [2020-09-25 05:37:02,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:37:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2020-09-25 05:37:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3138. [2020-09-25 05:37:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-09-25 05:37:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4058 transitions. [2020-09-25 05:37:02,331 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4058 transitions. Word has length 220 [2020-09-25 05:37:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:02,331 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4058 transitions. [2020-09-25 05:37:02,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:37:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4058 transitions. [2020-09-25 05:37:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 05:37:02,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:02,346 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:02,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:02,347 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:02,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:02,347 INFO L82 PathProgramCache]: Analyzing trace with hash -190242086, now seen corresponding path program 1 times [2020-09-25 05:37:02,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:02,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469335563] [2020-09-25 05:37:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:02,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:07,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:07,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 05:37:07,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:37:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 05:37:07,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:07,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:37:07,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:07,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:07,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:37:07,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:07,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:07,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:07,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:37:07,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:37:07,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:07,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:37:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:07,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:07,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:37:07,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 05:37:07,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:07,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:07,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:37:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:07,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 05:37:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:07,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:07,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:37:07,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:07,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:37:07,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:07,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:07,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 05:37:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 97 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 05:37:07,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469335563] [2020-09-25 05:37:07,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:07,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:07,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140736520] [2020-09-25 05:37:07,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:07,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:07,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:07,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:07,718 INFO L87 Difference]: Start difference. First operand 3138 states and 4058 transitions. Second operand 7 states. [2020-09-25 05:37:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:09,067 INFO L93 Difference]: Finished difference Result 5813 states and 7895 transitions. [2020-09-25 05:37:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:37:09,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-09-25 05:37:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:09,083 INFO L225 Difference]: With dead ends: 5813 [2020-09-25 05:37:09,083 INFO L226 Difference]: Without dead ends: 2697 [2020-09-25 05:37:09,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:37:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2020-09-25 05:37:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2573. [2020-09-25 05:37:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-09-25 05:37:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3183 transitions. [2020-09-25 05:37:09,171 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3183 transitions. Word has length 243 [2020-09-25 05:37:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:09,171 INFO L479 AbstractCegarLoop]: Abstraction has 2573 states and 3183 transitions. [2020-09-25 05:37:09,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3183 transitions. [2020-09-25 05:37:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 05:37:09,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:09,182 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:09,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:37:09,183 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:09,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:09,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1140212557, now seen corresponding path program 1 times [2020-09-25 05:37:09,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:09,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911794911] [2020-09-25 05:37:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking...