/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/bor5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:03:32,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:03:32,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:03:32,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:03:32,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:03:32,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:03:32,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:03:32,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:03:32,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:03:32,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:03:32,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:03:32,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:03:32,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:03:32,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:03:32,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:03:32,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:03:32,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:03:32,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:03:32,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:03:32,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:03:32,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:03:32,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:03:32,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:03:32,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:03:32,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:03:32,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:03:32,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:03:32,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:03:32,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:03:32,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:03:32,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:03:32,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:03:32,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:03:32,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:03:32,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:03:32,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:03:32,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:03:32,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:03:32,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:03:32,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:03:32,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:03:32,699 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 [2020-10-27 14:03:32,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:03:32,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:03:32,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:03:32,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:03:32,730 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:03:32,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:03:32,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:03:32,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:03:32,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:03:32,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:03:32,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:03:32,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:03:32,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:03:32,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:03:32,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:03:32,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:03:32,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:03:32,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:03:32,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:03:32,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:03:32,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:03:32,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:32,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:03:32,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:03:32,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:03:32,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:03:32,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:03:32,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:03:32,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:03:32,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:03:33,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:03:33,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:03:33,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:03:33,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:03:33,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:03:33,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor5.i [2020-10-27 14:03:33,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b49db9ee/4c6b7977f39e43e1819a9227597c1cea/FLAG799d0e30f [2020-10-27 14:03:34,077 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:03:34,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor5.i [2020-10-27 14:03:34,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b49db9ee/4c6b7977f39e43e1819a9227597c1cea/FLAG799d0e30f [2020-10-27 14:03:34,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b49db9ee/4c6b7977f39e43e1819a9227597c1cea [2020-10-27 14:03:34,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:03:34,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:03:34,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:34,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:03:34,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:03:34,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e143c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34, skipping insertion in model container [2020-10-27 14:03:34,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:03:34,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:03:34,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:34,693 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:03:34,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:34,743 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:03:34,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34 WrapperNode [2020-10-27 14:03:34,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:34,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:03:34,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:03:34,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:03:34,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (1/1) ... [2020-10-27 14:03:34,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:03:34,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:03:34,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:03:34,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:03:34,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (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 [2020-10-27 14:03:34,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:03:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:03:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:03:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-27 14:03:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:03:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:03:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:03:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:03:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:03:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:03:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:03:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:03:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-27 14:03:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:03:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:03:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:03:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:03:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:03:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:03:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:03:35,359 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:03:35,359 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:03:35,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:35 BoogieIcfgContainer [2020-10-27 14:03:35,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:03:35,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:03:35,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:03:35,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:03:35,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:03:34" (1/3) ... [2020-10-27 14:03:35,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cabe615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:35, skipping insertion in model container [2020-10-27 14:03:35,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:34" (2/3) ... [2020-10-27 14:03:35,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cabe615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:35, skipping insertion in model container [2020-10-27 14:03:35,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:35" (3/3) ... [2020-10-27 14:03:35,375 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2020-10-27 14:03:35,389 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:03:35,395 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:03:35,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:03:35,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:03:35,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:03:35,441 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:03:35,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:03:35,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:03:35,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:03:35,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:03:35,442 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:03:35,462 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 14:03:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:03:35,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:35,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:35,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:35,479 INFO L82 PathProgramCache]: Analyzing trace with hash -62284816, now seen corresponding path program 1 times [2020-10-27 14:03:35,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:35,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244829038] [2020-10-27 14:03:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:03:36,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-27 14:03:36,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:03:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 14:03:36,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:36,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:36,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:03:36,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:36,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:03:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:03:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:36,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:03:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:03:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:03:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:36,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:36,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:36,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:36,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:36,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244829038] [2020-10-27 14:03:36,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:36,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:03:36,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020290165] [2020-10-27 14:03:36,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:03:36,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:36,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:03:36,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:36,870 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-27 14:03:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:37,029 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2020-10-27 14:03:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:03:37,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-27 14:03:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:37,040 INFO L225 Difference]: With dead ends: 63 [2020-10-27 14:03:37,040 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 14:03:37,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 14:03:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 14:03:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:03:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:03:37,091 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 35 [2020-10-27 14:03:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:37,092 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:03:37,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:03:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:03:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:03:37,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:37,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:37,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:03:37,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:37,096 INFO L82 PathProgramCache]: Analyzing trace with hash -836638934, now seen corresponding path program 1 times [2020-10-27 14:03:37,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:37,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23970482] [2020-10-27 14:03:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:03:39,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2243 [2020-10-27 14:03:39,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:03:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:03:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:39,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:03:39,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:03:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:39,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 14:03:39,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:03:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:39,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:03:39,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:03:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:03:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 14:03:39,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23970482] [2020-10-27 14:03:39,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:39,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:03:39,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528978485] [2020-10-27 14:03:39,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:03:39,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:39,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:03:39,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:03:39,618 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-27 14:03:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:40,074 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-27 14:03:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:03:40,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-27 14:03:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:40,077 INFO L225 Difference]: With dead ends: 50 [2020-10-27 14:03:40,077 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:03:40,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:03:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-27 14:03:40,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 14:03:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 14:03:40,106 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2020-10-27 14:03:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:40,106 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 14:03:40,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:03:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 14:03:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:03:40,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:40,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:40,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:03:40,110 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:40,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1482508808, now seen corresponding path program 1 times [2020-10-27 14:03:40,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:40,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038696884] [2020-10-27 14:03:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:03:41,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-27 14:03:41,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:03:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:41,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:03:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:41,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:41,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:41,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 14:03:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:41,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:03:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:41,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:41,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:03:41,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:03:41,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038696884] [2020-10-27 14:03:41,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:41,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:03:41,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449784479] [2020-10-27 14:03:41,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:03:41,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:03:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:41,936 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-27 14:03:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:42,344 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-27 14:03:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:03:42,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-27 14:03:42,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:42,347 INFO L225 Difference]: With dead ends: 47 [2020-10-27 14:03:42,347 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:03:42,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:03:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:03:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 14:03:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:03:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:03:42,356 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 41 [2020-10-27 14:03:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:42,358 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:03:42,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:03:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:03:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:03:42,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:42,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:42,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:03:42,361 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:42,361 INFO L82 PathProgramCache]: Analyzing trace with hash -274705114, now seen corresponding path program 1 times [2020-10-27 14:03:42,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:42,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877468113] [2020-10-27 14:03:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:03:42,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 14:03:42,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:03:42,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:42,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:42,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:42,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:03:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:42,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:42,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 14:03:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 14:03:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:42,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:42,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 14:03:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:03:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:42,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:03:42,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 14:03:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 14:03:42,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877468113] [2020-10-27 14:03:42,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:42,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:03:42,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505902625] [2020-10-27 14:03:42,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:03:42,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:42,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:03:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:03:42,580 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-27 14:03:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:42,719 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-27 14:03:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:03:42,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-27 14:03:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:42,721 INFO L225 Difference]: With dead ends: 55 [2020-10-27 14:03:42,721 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:03:42,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:03:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:03:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-27 14:03:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 14:03:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-27 14:03:42,730 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2020-10-27 14:03:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:42,730 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-27 14:03:42,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:03:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-27 14:03:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:03:42,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:42,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:42,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:03:42,732 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash -11654744, now seen corresponding path program 1 times [2020-10-27 14:03:42,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:42,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502078252] [2020-10-27 14:03:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:03:42,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 14:03:42,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:03:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:42,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:42,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:42,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 14:03:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:43,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:43,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:43,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 14:03:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:43,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:03:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:43,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:43,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:43,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:43,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 14:03:43,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:43,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:03:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:43,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:43,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:03:43,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 14:03:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 14:03:43,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502078252] [2020-10-27 14:03:43,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:43,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:03:43,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550197639] [2020-10-27 14:03:43,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:03:43,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:43,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:03:43,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:43,045 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-27 14:03:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:43,213 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-27 14:03:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:03:43,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-27 14:03:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:43,215 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:03:43,215 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:03:43,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:03:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-27 14:03:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:03:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 14:03:43,223 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 45 [2020-10-27 14:03:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:43,223 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 14:03:43,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:03:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 14:03:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 14:03:43,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:43,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-27 14:03:43,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:03:43,225 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:43,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:43,226 INFO L82 PathProgramCache]: Analyzing trace with hash -623319638, now seen corresponding path program 2 times [2020-10-27 14:03:43,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:43,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990785573] [2020-10-27 14:03:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 14:03:43,254 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 14:03:43,254 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:03:43,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:03:43,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:03:43 BoogieIcfgContainer [2020-10-27 14:03:43,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:03:43,291 INFO L168 Benchmark]: Toolchain (without parser) took 8866.08 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 127.6 MB in the beginning and 162.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:03:43,291 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 103.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:03:43,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.64 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:03:43,293 INFO L168 Benchmark]: Boogie Preprocessor took 52.59 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:03:43,294 INFO L168 Benchmark]: RCFGBuilder took 565.70 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:03:43,295 INFO L168 Benchmark]: TraceAbstraction took 7920.75 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 129.6 MB in the beginning and 162.8 MB in the end (delta: -33.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:03:43,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 103.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.64 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.59 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 565.70 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7920.75 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 129.6 MB in the beginning and 162.8 MB in the end (delta: -33.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 25. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND FALSE !(i < N) [L45] CALL, EXPR bor(x) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L45] RET, EXPR bor(x) [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L48] CALL, EXPR bor(x) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L48] RET, EXPR bor(x) [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; [L50] COND TRUE i