/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/Problem02_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:31:33,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:31:33,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:31:33,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:31:33,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:31:33,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:31:33,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:31:33,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:31:33,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:31:33,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:31:33,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:31:33,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:31:33,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:31:33,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:31:33,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:31:33,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:31:33,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:31:33,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:31:33,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:31:33,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:31:33,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:31:33,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:31:33,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:31:33,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:31:33,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:31:33,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:31:33,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:31:33,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:31:33,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:31:33,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:31:33,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:31:33,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:31:33,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:31:33,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:31:33,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:31:33,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:31:33,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:31:33,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:31:33,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:31:33,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:31:33,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:31:33,739 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 13:31:33,787 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:31:33,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:31:33,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:31:33,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:31:33,790 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:31:33,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:31:33,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:31:33,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:31:33,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:31:33,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:31:33,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:31:33,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:31:33,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:31:33,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:31:33,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:31:33,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:31:33,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:31:33,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:31:33,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:31:33,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:31:33,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:31:33,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:31:33,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:31:33,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:31:33,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:31:33,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:31:33,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:31:33,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:31:33,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:31:33,797 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 13:31:34,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:31:34,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:31:34,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:31:34,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:31:34,289 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:31:34,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 13:31:34,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/670eb308b/cf9e7b605a6f4e52ae976432ac1d070e/FLAGbfe8b62a9 [2020-09-25 13:31:35,075 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:31:35,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 13:31:35,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/670eb308b/cf9e7b605a6f4e52ae976432ac1d070e/FLAGbfe8b62a9 [2020-09-25 13:31:35,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/670eb308b/cf9e7b605a6f4e52ae976432ac1d070e [2020-09-25 13:31:35,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:31:35,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:31:35,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:35,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:31:35,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:31:35,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:35" (1/1) ... [2020-09-25 13:31:35,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cd098f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:35, skipping insertion in model container [2020-09-25 13:31:35,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:35" (1/1) ... [2020-09-25 13:31:35,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:31:35,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:31:36,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:36,087 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:31:36,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:36,228 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:31:36,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36 WrapperNode [2020-09-25 13:31:36,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:36,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:31:36,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:31:36,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:31:36,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (1/1) ... [2020-09-25 13:31:36,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (1/1) ... [2020-09-25 13:31:36,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (1/1) ... [2020-09-25 13:31:36,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (1/1) ... [2020-09-25 13:31:36,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (1/1) ... [2020-09-25 13:31:36,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (1/1) ... [2020-09-25 13:31:36,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (1/1) ... [2020-09-25 13:31:36,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:31:36,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:31:36,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:31:36,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:31:36,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (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 13:31:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:31:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:31:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:31:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:31:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:31:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:31:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:31:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:31:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:31:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:31:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:31:37,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:31:37,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:31:37,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:37 BoogieIcfgContainer [2020-09-25 13:31:37,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:31:37,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:31:37,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:31:37,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:31:37,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:31:35" (1/3) ... [2020-09-25 13:31:37,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab4936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:37, skipping insertion in model container [2020-09-25 13:31:37,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:36" (2/3) ... [2020-09-25 13:31:37,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab4936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:37, skipping insertion in model container [2020-09-25 13:31:37,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:37" (3/3) ... [2020-09-25 13:31:37,905 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2020-09-25 13:31:37,918 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:31:37,933 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:31:37,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:31:37,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:31:37,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:31:37,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:31:37,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:31:37,999 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:31:37,999 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:31:37,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:31:37,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:31:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:31:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 13:31:38,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:38,062 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] [2020-09-25 13:31:38,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1196465745, now seen corresponding path program 1 times [2020-09-25 13:31:38,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:38,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111616711] [2020-09-25 13:31:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:40,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:43,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:43,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:31:43,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:31:43,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:43,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:31:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:31:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:31:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:43,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:43,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:43,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:31:43,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:43,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:31:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:31:43,704 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 13:31:43,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111616711] [2020-09-25 13:31:43,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:31:43,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:31:43,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061772733] [2020-09-25 13:31:43,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:31:43,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:43,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:31:43,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:31:43,741 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:31:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:46,332 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 13:31:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:31:46,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 13:31:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:46,367 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 13:31:46,367 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 13:31:46,376 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 13:31:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 13:31:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 13:31:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 13:31:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 13:31:46,495 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 122 [2020-09-25 13:31:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:46,496 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 13:31:46,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:31:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 13:31:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 13:31:46,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:46,509 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] [2020-09-25 13:31:46,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:31:46,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:46,511 INFO L82 PathProgramCache]: Analyzing trace with hash -54057051, now seen corresponding path program 1 times [2020-09-25 13:31:46,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:46,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847818217] [2020-09-25 13:31:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:51,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 13:31:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:31:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:31:51,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:51,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:31:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:31:51,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:51,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:51,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:51,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:51,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 13:31:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:31:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:31:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:51,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:31:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:51,797 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 13:31:51,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847818217] [2020-09-25 13:31:51,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:51,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:51,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223313150] [2020-09-25 13:31:51,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:51,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:51,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:51,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:51,804 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 13:31:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:53,728 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 13:31:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:53,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 13:31:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:53,737 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 13:31:53,737 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 13:31:53,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 13:31:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 13:31:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 13:31:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 13:31:53,792 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 140 [2020-09-25 13:31:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:53,793 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 13:31:53,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 13:31:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 13:31:53,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:53,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:53,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:31:53,799 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash -162318266, now seen corresponding path program 1 times [2020-09-25 13:31:53,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:53,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752039795] [2020-09-25 13:31:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:53,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:54,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:57,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:58,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:58,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 13:31:58,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:31:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:31:58,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:58,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:31:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:31:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:58,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:58,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:31:58,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:58,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:58,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:59,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:59,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:31:59,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:31:59,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:59,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:31:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:59,058 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 13:31:59,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752039795] [2020-09-25 13:31:59,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:59,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:59,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413495340] [2020-09-25 13:31:59,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:59,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:59,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:59,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:59,063 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-25 13:32:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:01,227 INFO L93 Difference]: Finished difference Result 2277 states and 2879 transitions. [2020-09-25 13:32:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:01,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 13:32:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:01,242 INFO L225 Difference]: With dead ends: 2277 [2020-09-25 13:32:01,243 INFO L226 Difference]: Without dead ends: 1328 [2020-09-25 13:32:01,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 13:32:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-09-25 13:32:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1276. [2020-09-25 13:32:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-25 13:32:01,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1534 transitions. [2020-09-25 13:32:01,310 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1534 transitions. Word has length 141 [2020-09-25 13:32:01,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:01,310 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1534 transitions. [2020-09-25 13:32:01,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1534 transitions. [2020-09-25 13:32:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 13:32:01,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:01,319 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:32:01,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:01,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:01,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1023468109, now seen corresponding path program 1 times [2020-09-25 13:32:01,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:01,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321425482] [2020-09-25 13:32:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:01,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:06,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:06,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 13:32:06,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:06,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:32:06,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:06,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:06,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:32:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:32:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:06,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:06,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:06,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:32:06,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:06,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:06,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:06,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:06,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:06,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:32:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:32:06,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:06,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:32:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:06,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321425482] [2020-09-25 13:32:06,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:06,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:06,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361881581] [2020-09-25 13:32:06,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:06,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:06,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:06,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:06,577 INFO L87 Difference]: Start difference. First operand 1276 states and 1534 transitions. Second operand 5 states. [2020-09-25 13:32:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:08,587 INFO L93 Difference]: Finished difference Result 2864 states and 3562 transitions. [2020-09-25 13:32:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:08,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 13:32:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:08,597 INFO L225 Difference]: With dead ends: 2864 [2020-09-25 13:32:08,597 INFO L226 Difference]: Without dead ends: 1610 [2020-09-25 13:32:08,603 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 13:32:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-09-25 13:32:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1581. [2020-09-25 13:32:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-09-25 13:32:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1883 transitions. [2020-09-25 13:32:08,651 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1883 transitions. Word has length 144 [2020-09-25 13:32:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:08,652 INFO L479 AbstractCegarLoop]: Abstraction has 1581 states and 1883 transitions. [2020-09-25 13:32:08,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1883 transitions. [2020-09-25 13:32:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 13:32:08,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:08,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:08,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:08,660 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1431728482, now seen corresponding path program 1 times [2020-09-25 13:32:08,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:08,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649569954] [2020-09-25 13:32:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:09,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:10,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:13,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:13,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 13:32:13,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:32:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:32:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:13,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 13:32:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:32:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:13,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:13,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:13,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:32:13,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:13,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:13,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:13,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:13,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:32:13,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 13:32:13,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:13,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:32:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:13,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649569954] [2020-09-25 13:32:13,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:13,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:13,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549341082] [2020-09-25 13:32:13,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:13,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:13,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:13,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:13,994 INFO L87 Difference]: Start difference. First operand 1581 states and 1883 transitions. Second operand 5 states. [2020-09-25 13:32:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:16,019 INFO L93 Difference]: Finished difference Result 3457 states and 4255 transitions. [2020-09-25 13:32:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:16,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 13:32:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:16,033 INFO L225 Difference]: With dead ends: 3457 [2020-09-25 13:32:16,034 INFO L226 Difference]: Without dead ends: 1898 [2020-09-25 13:32:16,039 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 13:32:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2020-09-25 13:32:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1888. [2020-09-25 13:32:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-09-25 13:32:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2258 transitions. [2020-09-25 13:32:16,092 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2258 transitions. Word has length 164 [2020-09-25 13:32:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:16,093 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2258 transitions. [2020-09-25 13:32:16,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2258 transitions. [2020-09-25 13:32:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 13:32:16,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:16,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:16,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:32:16,101 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1175488116, now seen corresponding path program 1 times [2020-09-25 13:32:16,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:16,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564078183] [2020-09-25 13:32:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:21,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 13:32:21,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:32:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 13:32:21,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:21,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:32:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 13:32:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:32:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:21,887 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-25 13:32:22,056 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2020-09-25 13:32:22,190 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2020-09-25 13:32:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:22,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:22,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:22,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:22,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:22,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:32:22,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 13:32:22,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:22,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:22,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:32:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:22,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564078183] [2020-09-25 13:32:22,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:22,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:32:22,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509535621] [2020-09-25 13:32:22,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:32:22,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:22,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:32:22,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:32:22,836 INFO L87 Difference]: Start difference. First operand 1888 states and 2258 transitions. Second operand 16 states. [2020-09-25 13:32:24,513 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 77