/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:55,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:55,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:55,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:55,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:55,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:55,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:55,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:55,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:55,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:55,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:55,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:55,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:55,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:55,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:55,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:55,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:55,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:55,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:55,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:55,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:55,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:55,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:55,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:55,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:55,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:55,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:55,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:55,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:55,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:55,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:55,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:55,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:55,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:55,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:55,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:55,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:55,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:55,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:55,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:55,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:55,925 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 13:29:55,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:55,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:55,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:55,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:55,962 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:55,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:55,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:55,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:55,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:55,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:55,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:55,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:55,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:55,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:55,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:55,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:55,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:55,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:55,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:55,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:55,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:55,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:55,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:55,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:55,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:55,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:55,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:55,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:55,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:55,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:29:56,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:56,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:56,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:56,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:56,488 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:56,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 13:29:56,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1ba8140c/afb1c4627dd843a48b1f1546f4511098/FLAG69bc8365f [2020-09-25 13:29:57,221 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:57,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 13:29:57,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1ba8140c/afb1c4627dd843a48b1f1546f4511098/FLAG69bc8365f [2020-09-25 13:29:57,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1ba8140c/afb1c4627dd843a48b1f1546f4511098 [2020-09-25 13:29:57,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:57,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:57,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:57,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:57,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:57,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:57" (1/1) ... [2020-09-25 13:29:57,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:57, skipping insertion in model container [2020-09-25 13:29:57,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:57" (1/1) ... [2020-09-25 13:29:57,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:57,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:57,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:58,008 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:58,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:58,245 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:58,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58 WrapperNode [2020-09-25 13:29:58,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:58,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:58,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:58,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:58,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:58,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:58,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:58,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:58,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (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 13:29:58,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:58,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:59,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:59,789 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:59,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:59 BoogieIcfgContainer [2020-09-25 13:29:59,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:59,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:59,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:59,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:59,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:57" (1/3) ... [2020-09-25 13:29:59,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:59, skipping insertion in model container [2020-09-25 13:29:59,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (2/3) ... [2020-09-25 13:29:59,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:59, skipping insertion in model container [2020-09-25 13:29:59,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:59" (3/3) ... [2020-09-25 13:29:59,821 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 13:29:59,835 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:59,859 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:59,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:59,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:59,930 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:59,930 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:59,931 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:59,931 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:59,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:59,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:59,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:30:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 13:30:00,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:00,016 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] [2020-09-25 13:30:00,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:00,024 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 13:30:00,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:00,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234330163] [2020-09-25 13:30:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 13:30:05,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:30:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:05,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:30:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 13:30:05,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:30:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:05,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:05,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:05,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:30:05,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:05,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:30:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:05,634 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 13:30:05,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234330163] [2020-09-25 13:30:05,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:05,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:05,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073820520] [2020-09-25 13:30:05,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:05,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:05,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:05,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:05,669 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:30:08,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:08,015 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 13:30:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:08,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 13:30:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:08,050 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 13:30:08,050 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 13:30:08,063 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 13:30:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 13:30:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 13:30:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:30:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 13:30:08,166 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 107 [2020-09-25 13:30:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:08,167 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 13:30:08,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 13:30:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 13:30:08,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:08,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:08,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:08,177 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash -191439372, now seen corresponding path program 1 times [2020-09-25 13:30:08,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:08,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909226020] [2020-09-25 13:30:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:08,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:12,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 13:30:12,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4451 [2020-09-25 13:30:12,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:12,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:30:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 13:30:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:12,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:12,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:12,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:30:12,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:12,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:12,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:12,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:30:12,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:12,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:30:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:12,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909226020] [2020-09-25 13:30:12,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:12,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:12,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137630307] [2020-09-25 13:30:12,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:12,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:12,990 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 13:30:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:15,234 INFO L93 Difference]: Finished difference Result 1499 states and 1862 transitions. [2020-09-25 13:30:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:15,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 13:30:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:15,248 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 13:30:15,248 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 13:30:15,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 13:30:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 891. [2020-09-25 13:30:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 13:30:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1045 transitions. [2020-09-25 13:30:15,297 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1045 transitions. Word has length 128 [2020-09-25 13:30:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:15,298 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1045 transitions. [2020-09-25 13:30:15,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1045 transitions. [2020-09-25 13:30:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:30:15,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:15,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:15,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:15,306 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:15,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1459519869, now seen corresponding path program 1 times [2020-09-25 13:30:15,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:15,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039262768] [2020-09-25 13:30:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:20,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 13:30:20,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 13:30:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:20,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 13:30:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 13:30:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:20,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:20,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:20,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:20,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:30:20,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:30:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:20,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:30:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:20,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039262768] [2020-09-25 13:30:20,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:20,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:20,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173942095] [2020-09-25 13:30:20,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:20,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:20,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:20,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:20,608 INFO L87 Difference]: Start difference. First operand 891 states and 1045 transitions. Second operand 5 states. [2020-09-25 13:30:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:22,526 INFO L93 Difference]: Finished difference Result 2276 states and 2773 transitions. [2020-09-25 13:30:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:22,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 13:30:22,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:22,537 INFO L225 Difference]: With dead ends: 2276 [2020-09-25 13:30:22,538 INFO L226 Difference]: Without dead ends: 1409 [2020-09-25 13:30:22,541 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 13:30:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2020-09-25 13:30:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1177. [2020-09-25 13:30:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 13:30:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1428 transitions. [2020-09-25 13:30:22,619 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1428 transitions. Word has length 132 [2020-09-25 13:30:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:22,621 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1428 transitions. [2020-09-25 13:30:22,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1428 transitions. [2020-09-25 13:30:22,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 13:30:22,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:22,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:22,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:22,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:22,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:22,642 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 13:30:22,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:22,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109668788] [2020-09-25 13:30:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:30:24,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-09-25 13:30:24,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:30:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:30:24,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:24,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:24,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 13:30:24,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:30:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:24,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:30:24,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 13:30:24,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:30:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:24,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109668788] [2020-09-25 13:30:24,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:24,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:30:24,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869185290] [2020-09-25 13:30:24,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:30:24,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:24,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:30:24,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:30:24,626 INFO L87 Difference]: Start difference. First operand 1177 states and 1428 transitions. Second operand 7 states. [2020-09-25 13:30:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:27,030 INFO L93 Difference]: Finished difference Result 3140 states and 3941 transitions. [2020-09-25 13:30:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:30:27,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 13:30:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:27,044 INFO L225 Difference]: With dead ends: 3140 [2020-09-25 13:30:27,044 INFO L226 Difference]: Without dead ends: 1839 [2020-09-25 13:30:27,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:30:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-09-25 13:30:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1771. [2020-09-25 13:30:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1771 states. [2020-09-25 13:30:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2173 transitions. [2020-09-25 13:30:27,122 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2173 transitions. Word has length 137 [2020-09-25 13:30:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:27,122 INFO L479 AbstractCegarLoop]: Abstraction has 1771 states and 2173 transitions. [2020-09-25 13:30:27,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:30:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2173 transitions. [2020-09-25 13:30:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:30:27,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:27,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:30:27,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:30:27,134 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:27,135 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 13:30:27,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:27,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794167873] [2020-09-25 13:30:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 13:30:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:30:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:32,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:30:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:30:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:30:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:32,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:32,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:30:32,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:32,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:30:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:30:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:32,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:32,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:32,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 13:30:32,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:32,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:30:32,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:30:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:30:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:32,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:30:32,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 13:30:32,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:32,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:30:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:30:32,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794167873] [2020-09-25 13:30:32,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:32,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:30:32,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924121255] [2020-09-25 13:30:32,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:30:32,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:32,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:30:32,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:30:32,753 INFO L87 Difference]: Start difference. First operand 1771 states and 2173 transitions. Second operand 10 states. [2020-09-25 13:30:33,459 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-09-25 13:30:34,722 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-09-25 13:30:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:37,497 INFO L93 Difference]: Finished difference Result 4963 states and 6352 transitions. [2020-09-25 13:30:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 13:30:37,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-25 13:30:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:37,513 INFO L225 Difference]: With dead ends: 4963 [2020-09-25 13:30:37,513 INFO L226 Difference]: Without dead ends: 2432 [2020-09-25 13:30:37,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:30:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2020-09-25 13:30:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1942. [2020-09-25 13:30:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1942 states. [2020-09-25 13:30:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2204 transitions. [2020-09-25 13:30:37,611 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2204 transitions. Word has length 158 [2020-09-25 13:30:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:37,611 INFO L479 AbstractCegarLoop]: Abstraction has 1942 states and 2204 transitions. [2020-09-25 13:30:37,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:30:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2204 transitions. [2020-09-25 13:30:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:30:37,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:37,619 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:30:37,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:30:37,619 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:37,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 13:30:37,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:37,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110508618] [2020-09-25 13:30:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 13:30:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:30:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:30:42,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:30:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:30:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:30:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:42,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:42,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:30:42,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:30:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:42,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 13:30:42,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:30:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:42,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:30:42,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:42,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 13:30:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:43,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:30:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:30:43,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:43,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:30:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:30:43,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110508618] [2020-09-25 13:30:43,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:43,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:30:43,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725552272] [2020-09-25 13:30:43,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:30:43,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:43,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:30:43,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:30:43,074 INFO L87 Difference]: Start difference. First operand 1942 states and 2204 transitions. Second operand 8 states. [2020-09-25 13:30:43,790 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62