/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:40,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:40,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:40,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:40,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:40,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:40,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:40,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:40,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:40,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:40,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:40,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:40,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:40,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:40,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:40,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:40,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:40,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:40,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:40,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:40,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:40,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:40,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:40,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:40,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:40,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:40,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:40,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:40,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:40,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:40,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:40,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:40,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:40,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:40,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:40,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:40,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:40,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:40,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:40,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:40,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:40,514 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 13:28:40,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:40,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:40,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:40,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:40,542 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:40,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:40,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:40,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:40,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:40,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:40,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:40,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:40,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:40,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:40,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:40,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:40,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:40,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:40,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:40,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:40,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:40,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:40,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:40,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:40,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:40,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:40,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:40,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:40,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:40,547 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 13:28:41,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:41,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:41,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:41,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:41,045 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:41,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 13:28:41,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f612cb037/1ffefdc52b824186b50a0e733da9cbe3/FLAGa8f8bf9f2 [2020-09-25 13:28:41,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:41,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 13:28:41,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f612cb037/1ffefdc52b824186b50a0e733da9cbe3/FLAGa8f8bf9f2 [2020-09-25 13:28:42,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f612cb037/1ffefdc52b824186b50a0e733da9cbe3 [2020-09-25 13:28:42,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:42,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:42,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:42,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:42,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:42,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42, skipping insertion in model container [2020-09-25 13:28:42,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:42,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:42,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:42,588 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:42,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:42,846 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:42,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42 WrapperNode [2020-09-25 13:28:42,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:42,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:42,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:42,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:42,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (1/1) ... [2020-09-25 13:28:42,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:43,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:43,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:43,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:43,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (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 13:28:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:28:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:28:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:44,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:44,545 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:28:44,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:44 BoogieIcfgContainer [2020-09-25 13:28:44,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:44,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:44,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:44,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:44,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:42" (1/3) ... [2020-09-25 13:28:44,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:44, skipping insertion in model container [2020-09-25 13:28:44,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:42" (2/3) ... [2020-09-25 13:28:44,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:44, skipping insertion in model container [2020-09-25 13:28:44,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:44" (3/3) ... [2020-09-25 13:28:44,571 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 13:28:44,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:44,595 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:44,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:44,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:44,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:44,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:44,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:44,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:44,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:44,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:44,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:28:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 13:28:44,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:44,707 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 13:28:44,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:44,714 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 13:28:44,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:44,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 13:28:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:28:50,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:28:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:28:50,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:28:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 13:28:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:28:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:28:50,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:28:50,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:28:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:50,354 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 13:28:50,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 13:28:50,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:50,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:28:50,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032934605] [2020-09-25 13:28:50,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:28:50,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:50,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:28:50,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:28:50,388 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 13:28:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:53,364 INFO L93 Difference]: Finished difference Result 1449 states and 1984 transitions. [2020-09-25 13:28:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:28:53,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-09-25 13:28:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:53,395 INFO L225 Difference]: With dead ends: 1449 [2020-09-25 13:28:53,395 INFO L226 Difference]: Without dead ends: 870 [2020-09-25 13:28:53,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-09-25 13:28:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 746. [2020-09-25 13:28:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 13:28:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 908 transitions. [2020-09-25 13:28:53,521 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 908 transitions. Word has length 122 [2020-09-25 13:28:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:53,522 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 908 transitions. [2020-09-25 13:28:53,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:28:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 908 transitions. [2020-09-25 13:28:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 13:28:53,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:53,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:53,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:53,533 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:53,534 INFO L82 PathProgramCache]: Analyzing trace with hash 812216710, now seen corresponding path program 1 times [2020-09-25 13:28:53,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:53,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947640629] [2020-09-25 13:28:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:53,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-09-25 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:28:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:54,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:28:55,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:28:55,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:55,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:28:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:28:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:28:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:55,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:28:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:55,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947640629] [2020-09-25 13:28:55,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:55,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:28:55,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132174176] [2020-09-25 13:28:55,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:28:55,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:28:55,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:28:55,137 INFO L87 Difference]: Start difference. First operand 746 states and 908 transitions. Second operand 5 states. [2020-09-25 13:28:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:57,170 INFO L93 Difference]: Finished difference Result 1955 states and 2479 transitions. [2020-09-25 13:28:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:28:57,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 13:28:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:57,179 INFO L225 Difference]: With dead ends: 1955 [2020-09-25 13:28:57,180 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 13:28:57,183 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 13:28:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 13:28:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-25 13:28:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 13:28:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1467 transitions. [2020-09-25 13:28:57,234 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1467 transitions. Word has length 143 [2020-09-25 13:28:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:57,235 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1467 transitions. [2020-09-25 13:28:57,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:28:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1467 transitions. [2020-09-25 13:28:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 13:28:57,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:57,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:57,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:57,243 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:57,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1603318008, now seen corresponding path program 1 times [2020-09-25 13:28:57,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:57,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707530136] [2020-09-25 13:28:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:02,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:02,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 13:29:02,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:29:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5258 [2020-09-25 13:29:02,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:02,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:29:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:29:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 13:29:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:02,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:02,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:02,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:02,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:02,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:02,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:02,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:29:02,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 13:29:02,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:02,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:29:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:29:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:03,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707530136] [2020-09-25 13:29:03,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:03,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:29:03,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605607008] [2020-09-25 13:29:03,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:29:03,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:03,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:29:03,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:29:03,172 INFO L87 Difference]: Start difference. First operand 1177 states and 1467 transitions. Second operand 10 states. [2020-09-25 13:29:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:06,323 INFO L93 Difference]: Finished difference Result 3307 states and 4324 transitions. [2020-09-25 13:29:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:29:06,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 159 [2020-09-25 13:29:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:06,340 INFO L225 Difference]: With dead ends: 3307 [2020-09-25 13:29:06,341 INFO L226 Difference]: Without dead ends: 1918 [2020-09-25 13:29:06,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:29:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-09-25 13:29:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1618. [2020-09-25 13:29:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1618 states. [2020-09-25 13:29:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 1988 transitions. [2020-09-25 13:29:06,434 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 1988 transitions. Word has length 159 [2020-09-25 13:29:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:06,435 INFO L479 AbstractCegarLoop]: Abstraction has 1618 states and 1988 transitions. [2020-09-25 13:29:06,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:29:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 1988 transitions. [2020-09-25 13:29:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:29:06,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:06,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:06,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:06,445 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1118935241, now seen corresponding path program 1 times [2020-09-25 13:29:06,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:06,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074552518] [2020-09-25 13:29:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:06,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:11,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:29:11,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:29:11,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 13:29:11,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:11,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:11,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:29:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:29:11,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:11,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:11,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:11,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:11,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:11,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:11,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:11,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:29:11,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:29:11,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:11,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:29:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:11,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074552518] [2020-09-25 13:29:11,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:11,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:29:11,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108699660] [2020-09-25 13:29:11,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:29:11,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:11,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:29:11,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:11,951 INFO L87 Difference]: Start difference. First operand 1618 states and 1988 transitions. Second operand 6 states. [2020-09-25 13:29:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:14,568 INFO L93 Difference]: Finished difference Result 4687 states and 5997 transitions. [2020-09-25 13:29:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:29:14,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 13:29:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:14,586 INFO L225 Difference]: With dead ends: 4687 [2020-09-25 13:29:14,586 INFO L226 Difference]: Without dead ends: 2929 [2020-09-25 13:29:14,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:29:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-09-25 13:29:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2468. [2020-09-25 13:29:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2468 states. [2020-09-25 13:29:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3016 transitions. [2020-09-25 13:29:14,674 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3016 transitions. Word has length 165 [2020-09-25 13:29:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:14,675 INFO L479 AbstractCegarLoop]: Abstraction has 2468 states and 3016 transitions. [2020-09-25 13:29:14,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:29:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3016 transitions. [2020-09-25 13:29:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 13:29:14,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:14,686 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, 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] [2020-09-25 13:29:14,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:14,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:14,687 INFO L82 PathProgramCache]: Analyzing trace with hash -598927294, now seen corresponding path program 1 times [2020-09-25 13:29:14,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:14,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257348971] [2020-09-25 13:29:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:14,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:19,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 13:29:19,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:29:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:29:19,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:19,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:29:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:29:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:19,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:29:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:19,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:29:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:19,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:20,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:29:20,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:20,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:20,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:20,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:20,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 13:29:20,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:20,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 13:29:20,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:20,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:20,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:29:20,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:29:20,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257348971] [2020-09-25 13:29:20,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:20,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:29:20,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404728095] [2020-09-25 13:29:20,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:29:20,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:20,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:29:20,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:29:20,338 INFO L87 Difference]: Start difference. First operand 2468 states and 3016 transitions. Second operand 8 states. [2020-09-25 13:29:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:22,347 INFO L93 Difference]: Finished difference Result 5046 states and 6273 transitions. [2020-09-25 13:29:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:29:22,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 13:29:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:22,363 INFO L225 Difference]: With dead ends: 5046 [2020-09-25 13:29:22,363 INFO L226 Difference]: Without dead ends: 2602 [2020-09-25 13:29:22,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:29:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2020-09-25 13:29:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2215. [2020-09-25 13:29:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-09-25 13:29:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2629 transitions. [2020-09-25 13:29:22,441 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2629 transitions. Word has length 184 [2020-09-25 13:29:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:22,441 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2629 transitions. [2020-09-25 13:29:22,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:29:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2629 transitions. [2020-09-25 13:29:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 13:29:22,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:22,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:22,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:29:22,451 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:22,451 INFO L82 PathProgramCache]: Analyzing trace with hash -488821343, now seen corresponding path program 1 times [2020-09-25 13:29:22,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:22,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627797907] [2020-09-25 13:29:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 13:29:27,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:29:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:29:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:27,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:29:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:29:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 13:29:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:27,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:27,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:27,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:27,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:27,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:27,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:27,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:27,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:29:27,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:29:27,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:27,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:29:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 13:29:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:27,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:28,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:29:28,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 13:29:28,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:28,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:28,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:28,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:28,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 13:29:28,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:29:28,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627797907] [2020-09-25 13:29:28,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:28,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:29:28,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314835862] [2020-09-25 13:29:28,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:29:28,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:28,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:29:28,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:29:28,280 INFO L87 Difference]: Start difference. First operand 2215 states and 2629 transitions. Second operand 9 states.