/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=SHALLOWEST --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/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:35:12,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:35:12,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:35:12,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:35:12,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:35:12,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:35:12,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:35:12,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:35:12,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:35:12,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:35:12,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:35:12,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:35:12,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:35:12,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:35:12,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:35:12,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:35:12,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:35:12,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:35:12,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:35:12,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:35:12,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:35:12,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:35:12,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:35:12,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:35:12,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:35:12,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:35:12,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:35:12,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:35:12,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:35:12,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:35:12,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:35:12,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:35:12,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:35:12,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:35:12,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:35:12,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:35:12,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:35:12,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:35:12,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:35:12,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:35:12,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:35:12,670 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 01:35:12,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:35:12,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:35:12,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:35:12,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:35:12,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:35:12,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:35:12,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:35:12,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:35:12,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:35:12,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:35:12,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:35:12,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:35:12,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:35:12,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:35:12,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:35:12,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:35:12,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:35:12,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:35:12,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:35:12,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:35:12,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:35:12,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:35:12,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:35:12,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:35:12,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:35:12,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:35:12,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:35:12,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:35:12,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:35:12,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:35:13,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:35:13,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:35:13,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:35:13,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:35:13,202 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:35:13,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2020-10-27 01:35:13,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/470c70a28/53ab30a83fb64cc1b9f612d1ac83b776/FLAG22b0867eb [2020-10-27 01:35:13,929 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:35:13,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2020-10-27 01:35:13,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/470c70a28/53ab30a83fb64cc1b9f612d1ac83b776/FLAG22b0867eb [2020-10-27 01:35:14,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/470c70a28/53ab30a83fb64cc1b9f612d1ac83b776 [2020-10-27 01:35:14,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:35:14,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:35:14,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:35:14,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:35:14,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:35:14,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d0f3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14, skipping insertion in model container [2020-10-27 01:35:14,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:35:14,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:35:14,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:35:14,566 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:35:14,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:35:14,622 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:35:14,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14 WrapperNode [2020-10-27 01:35:14,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:35:14,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:35:14,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:35:14,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:35:14,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (1/1) ... [2020-10-27 01:35:14,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:35:14,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:35:14,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:35:14,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:35:14,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (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 01:35:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:35:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:35:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:35:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:35:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:35:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:35:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:35:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:35:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:35:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:35:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:35:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 01:35:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:35:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:35:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:35:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:35:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:35:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:35:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:35:15,344 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:35:15,344 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:35:15,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:35:15 BoogieIcfgContainer [2020-10-27 01:35:15,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:35:15,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:35:15,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:35:15,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:35:15,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:35:14" (1/3) ... [2020-10-27 01:35:15,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61174d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:35:15, skipping insertion in model container [2020-10-27 01:35:15,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:35:14" (2/3) ... [2020-10-27 01:35:15,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61174d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:35:15, skipping insertion in model container [2020-10-27 01:35:15,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:35:15" (3/3) ... [2020-10-27 01:35:15,367 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2020-10-27 01:35:15,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:35:15,386 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:35:15,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:35:15,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:35:15,446 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:35:15,446 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:35:15,446 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:35:15,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:35:15,447 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:35:15,447 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:35:15,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:35:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-27 01:35:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 01:35:15,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:15,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:35:15,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:15,496 INFO L82 PathProgramCache]: Analyzing trace with hash 261621467, now seen corresponding path program 1 times [2020-10-27 01:35:15,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:15,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982746775] [2020-10-27 01:35:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:16,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:16,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:35:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-27 01:35:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:35:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:35:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:35:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:35:16,353 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-27 01:35:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:16,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:16,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:16,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:16,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:35:16,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:35:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:16,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982746775] [2020-10-27 01:35:16,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:16,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:35:16,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885054225] [2020-10-27 01:35:16,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:35:16,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:16,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:35:16,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:35:16,461 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-27 01:35:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:16,737 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2020-10-27 01:35:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:35:16,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-27 01:35:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:16,749 INFO L225 Difference]: With dead ends: 61 [2020-10-27 01:35:16,749 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 01:35:16,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:35:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 01:35:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-27 01:35:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 01:35:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2020-10-27 01:35:16,800 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2020-10-27 01:35:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:16,800 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2020-10-27 01:35:16,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:35:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2020-10-27 01:35:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:35:16,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:16,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:35:16,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:35:16,802 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:16,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:16,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1292404533, now seen corresponding path program 1 times [2020-10-27 01:35:16,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:16,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784696166] [2020-10-27 01:35:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:17,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:17,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:35:17,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 01:35:17,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:35:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:35:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 01:35:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:17,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:17,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:35:17,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:17,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784696166] [2020-10-27 01:35:17,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:17,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:35:17,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019514686] [2020-10-27 01:35:17,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:35:17,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:17,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:35:17,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:35:17,118 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 5 states. [2020-10-27 01:35:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:17,264 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-10-27 01:35:17,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:35:17,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-27 01:35:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:17,267 INFO L225 Difference]: With dead ends: 51 [2020-10-27 01:35:17,267 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 01:35:17,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:35:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 01:35:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2020-10-27 01:35:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 01:35:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-10-27 01:35:17,279 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2020-10-27 01:35:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:17,280 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-10-27 01:35:17,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:35:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-10-27 01:35:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:35:17,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:17,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:35:17,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:35:17,282 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash -997598672, now seen corresponding path program 1 times [2020-10-27 01:35:17,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:17,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358085773] [2020-10-27 01:35:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:17,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:17,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:35:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:35:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 01:35:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:35:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:35:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:35:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:35:17,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:17,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:17,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:17,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:35:17,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:17,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:17,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358085773] [2020-10-27 01:35:17,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:17,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:35:17,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510632923] [2020-10-27 01:35:17,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:35:17,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:17,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:35:17,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:35:17,550 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2020-10-27 01:35:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:17,656 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2020-10-27 01:35:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:35:17,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 01:35:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:17,658 INFO L225 Difference]: With dead ends: 59 [2020-10-27 01:35:17,658 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 01:35:17,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 01:35:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 01:35:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-27 01:35:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 01:35:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-27 01:35:17,668 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 15 [2020-10-27 01:35:17,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:17,668 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-27 01:35:17,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:35:17,668 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-27 01:35:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:35:17,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:17,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:35:17,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:35:17,670 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1082587837, now seen corresponding path program 1 times [2020-10-27 01:35:17,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:17,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927081141] [2020-10-27 01:35:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:17,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:17,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 01:35:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 01:35:17,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:35:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:35:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:35:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:17,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:17,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:17,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:35:17,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:17,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:17,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927081141] [2020-10-27 01:35:17,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:17,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:35:17,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565250816] [2020-10-27 01:35:17,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:35:17,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:17,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:35:17,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:35:17,801 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2020-10-27 01:35:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:17,893 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-27 01:35:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:35:17,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-27 01:35:17,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:17,895 INFO L225 Difference]: With dead ends: 54 [2020-10-27 01:35:17,895 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 01:35:17,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 01:35:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 01:35:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-10-27 01:35:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 01:35:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 01:35:17,902 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 16 [2020-10-27 01:35:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:17,903 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 01:35:17,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:35:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 01:35:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:35:17,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:17,904 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] [2020-10-27 01:35:17,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:35:17,904 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:17,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:17,905 INFO L82 PathProgramCache]: Analyzing trace with hash 580544029, now seen corresponding path program 1 times [2020-10-27 01:35:17,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:17,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070037271] [2020-10-27 01:35:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:18,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:18,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:35:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-27 01:35:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:35:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 01:35:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:35:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:19,005 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-10-27 01:35:19,688 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 72 [2020-10-27 01:35:19,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:19,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:19,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:19,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:35:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:35:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:19,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070037271] [2020-10-27 01:35:19,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:19,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:35:19,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213118870] [2020-10-27 01:35:19,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:35:19,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:35:19,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:35:19,801 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2020-10-27 01:35:20,038 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 01:35:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:20,105 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-27 01:35:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:35:20,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-27 01:35:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:20,106 INFO L225 Difference]: With dead ends: 36 [2020-10-27 01:35:20,106 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 01:35:20,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:35:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 01:35:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-27 01:35:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 01:35:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 01:35:20,114 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 21 [2020-10-27 01:35:20,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:20,115 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 01:35:20,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:35:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 01:35:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:35:20,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:20,116 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] [2020-10-27 01:35:20,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:35:20,117 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:20,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2114892265, now seen corresponding path program 1 times [2020-10-27 01:35:20,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:20,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178075351] [2020-10-27 01:35:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:20,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:20,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:35:20,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:20,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 01:35:20,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:35:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 01:35:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 01:35:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:20,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:20,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:20,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:35:20,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:20,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178075351] [2020-10-27 01:35:20,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:20,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:35:20,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54781467] [2020-10-27 01:35:20,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:35:20,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:20,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:35:20,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:35:20,378 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-27 01:35:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:20,523 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-27 01:35:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:35:20,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 01:35:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:20,528 INFO L225 Difference]: With dead ends: 51 [2020-10-27 01:35:20,528 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 01:35:20,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:35:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 01:35:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2020-10-27 01:35:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 01:35:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 01:35:20,541 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-10-27 01:35:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:20,541 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 01:35:20,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:35:20,542 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 01:35:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:35:20,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:20,543 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] [2020-10-27 01:35:20,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:35:20,545 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:20,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1682297212, now seen corresponding path program 1 times [2020-10-27 01:35:20,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:20,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045055657] [2020-10-27 01:35:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:20,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:20,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:35:20,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:35:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 01:35:20,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:35:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:35:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:35:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:21,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:35:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:21,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045055657] [2020-10-27 01:35:21,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:21,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:35:21,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007194481] [2020-10-27 01:35:21,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:35:21,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:21,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:35:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:35:21,066 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-27 01:35:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:21,268 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-27 01:35:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:35:21,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-27 01:35:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:21,270 INFO L225 Difference]: With dead ends: 69 [2020-10-27 01:35:21,270 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 01:35:21,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:35:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 01:35:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-10-27 01:35:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 01:35:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-27 01:35:21,279 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 22 [2020-10-27 01:35:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:21,280 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-27 01:35:21,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:35:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-27 01:35:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:35:21,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:21,281 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] [2020-10-27 01:35:21,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:35:21,282 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:21,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:21,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1432528385, now seen corresponding path program 1 times [2020-10-27 01:35:21,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:21,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529826883] [2020-10-27 01:35:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:21,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:21,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:21,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:35:21,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:35:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-27 01:35:21,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:35:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:35:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:35:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:21,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:35:21,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:21,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529826883] [2020-10-27 01:35:21,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:35:21,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:35:21,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814990966] [2020-10-27 01:35:21,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:35:21,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:21,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:35:21,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:35:21,626 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-10-27 01:35:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:21,782 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-27 01:35:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:35:21,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-27 01:35:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:21,784 INFO L225 Difference]: With dead ends: 62 [2020-10-27 01:35:21,784 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 01:35:21,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:35:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 01:35:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-27 01:35:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 01:35:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 01:35:21,792 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 23 [2020-10-27 01:35:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:21,793 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 01:35:21,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:35:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 01:35:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:35:21,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:21,794 INFO L422 BasicCegarLoop]: trace histogram [2, 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 01:35:21,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:35:21,794 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:21,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:21,795 INFO L82 PathProgramCache]: Analyzing trace with hash -796843456, now seen corresponding path program 1 times [2020-10-27 01:35:21,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:21,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779306315] [2020-10-27 01:35:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:22,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:35:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:35:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-27 01:35:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:35:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 01:35:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:35:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:22,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:22,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:22,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:35:22,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:22,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779306315] [2020-10-27 01:35:22,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:35:22,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 01:35:22,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927068079] [2020-10-27 01:35:22,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:35:22,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:22,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:35:22,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:35:22,741 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-27 01:35:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:22,941 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-10-27 01:35:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:35:22,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-27 01:35:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:22,942 INFO L225 Difference]: With dead ends: 41 [2020-10-27 01:35:22,942 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 01:35:22,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:35:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 01:35:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-27 01:35:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 01:35:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-27 01:35:22,953 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2020-10-27 01:35:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:22,953 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-27 01:35:22,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:35:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-27 01:35:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 01:35:22,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:22,955 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:35:22,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:35:22,956 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:22,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:22,956 INFO L82 PathProgramCache]: Analyzing trace with hash 723219278, now seen corresponding path program 1 times [2020-10-27 01:35:22,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:22,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145715327] [2020-10-27 01:35:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:23,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:25,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:25,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 01:35:25,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:35:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2113 [2020-10-27 01:35:25,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:35:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:35:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:35:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:25,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:25,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:25,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:35:25,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:25,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145715327] [2020-10-27 01:35:25,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:35:25,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:35:25,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687897793] [2020-10-27 01:35:25,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:35:25,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:25,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:35:25,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:35:25,275 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-10-27 01:35:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:31,890 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-27 01:35:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:35:31,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-27 01:35:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:31,892 INFO L225 Difference]: With dead ends: 57 [2020-10-27 01:35:31,892 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 01:35:31,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:35:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 01:35:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2020-10-27 01:35:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 01:35:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-27 01:35:31,900 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 29 [2020-10-27 01:35:31,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:31,900 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-27 01:35:31,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:35:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-27 01:35:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 01:35:31,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:35:31,901 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:35:31,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:35:31,902 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:35:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:35:31,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2077026492, now seen corresponding path program 2 times [2020-10-27 01:35:31,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:35:31,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736598807] [2020-10-27 01:35:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:35:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:33,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:36,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:36,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 01:35:36,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 01:35:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 01:35:36,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:35:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:35:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:35:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:37,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:35:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:35:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:35:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:35:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:35:37,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:35:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:35:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:35:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:35:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:35:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:35:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:35:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:35:37,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736598807] [2020-10-27 01:35:37,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:35:37,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:35:37,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536717887] [2020-10-27 01:35:37,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:35:37,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:35:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:35:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:35:37,276 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2020-10-27 01:35:37,835 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-10-27 01:35:40,270 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-27 01:35:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:35:40,337 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-10-27 01:35:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:35:40,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-27 01:35:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:35:40,338 INFO L225 Difference]: With dead ends: 44 [2020-10-27 01:35:40,338 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:35:40,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:35:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:35:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:35:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:35:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:35:40,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-10-27 01:35:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:35:40,340 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:35:40,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:35:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:35:40,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:35:40,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:35:40,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:35:49,199 WARN L193 SmtUtils]: Spent 8.73 s on a formula simplification. DAG size of input: 105 DAG size of output: 54 [2020-10-27 01:35:55,593 WARN L193 SmtUtils]: Spent 6.39 s on a formula simplification. DAG size of input: 61 DAG size of output: 25 [2020-10-27 01:35:58,158 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 60 DAG size of output: 15 [2020-10-27 01:35:58,248 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 01:35:58,248 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 01:35:58,249 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 01:35:58,249 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 01:35:58,249 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:35:58,249 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~__return_136~0 |old(~__return_136~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 01:35:58,249 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:35:58,249 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:35:58,249 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:35:58,249 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:35:58,249 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point L97(lines 97 132) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point L31(lines 31 147) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point L60(lines 60 93) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 14 196) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L270 CegarLoopResult]: At program point L151(lines 29 152) the Hoare annotation is: false [2020-10-27 01:35:58,250 INFO L270 CegarLoopResult]: At program point L172(lines 26 185) the Hoare annotation is: (<= (+ (* 4294967296 (div (+ (* (div (+ (* main_~main__index2~0 (- 1)) 4294967294) 4294967296) (- 4294967296)) (* main_~main__index1~0 (- 1)) 4294967296) 4294967296)) main_~main__index1~0) (+ main_~main__index2~0 1)) [2020-10-27 01:35:58,250 INFO L270 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: false [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point L40(lines 40 139) no Hoare annotation was computed. [2020-10-27 01:35:58,250 INFO L274 CegarLoopResult]: For program point L73-1(line 73) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L277 CegarLoopResult]: At program point L131(lines 97 132) the Hoare annotation is: true [2020-10-27 01:35:58,251 INFO L274 CegarLoopResult]: For program point L156(lines 156 184) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L274 CegarLoopResult]: For program point L57(lines 57 133) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L274 CegarLoopResult]: For program point L24(lines 24 190) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L270 CegarLoopResult]: At program point L119(lines 98 128) the Hoare annotation is: (let ((.cse6 (div main_~main__index2~0 4294967296))) (let ((.cse3 (* 4294967296 .cse6)) (.cse7 (div main_~main__index1~0 4294967296))) (or (let ((.cse5 (select |#memory_int| |main_~#main__array~0.base|))) (let ((.cse4 (select .cse5 (+ (* main_~main__index1~0 4) |main_~#main__array~0.offset| (* .cse7 (- 17179869184))))) (.cse1 (select .cse5 (+ (* main_~main__index2~0 4) |main_~#main__array~0.offset| (* .cse6 (- 17179869184)))))) (let ((.cse2 (+ .cse4 (* 4294967296 (div .cse1 4294967296)))) (.cse0 (* 4294967296 (div .cse4 4294967296)))) (and (<= (+ .cse0 .cse1) .cse2) (< .cse2 (+ .cse0 .cse1 1)) (<= main_~main__index2~0 (+ .cse3 99998)) (<= (+ (* 4294967296 (div (+ (* (div (+ (* main_~main__index2~0 (- 1)) 4294967294) 4294967296) (- 4294967296)) (* main_~main__index1~0 (- 1)) 4294967296) 4294967296)) main_~main__index1~0) (+ main_~main__index2~0 1)))))) (<= (+ main_~main__index1~0 .cse3 1) (+ main_~main__index2~0 (* 4294967296 .cse7)))))) [2020-10-27 01:35:58,251 INFO L274 CegarLoopResult]: For program point L107(lines 107 120) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L274 CegarLoopResult]: For program point L165(lines 165 173) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L274 CegarLoopResult]: For program point L62(lines 62 88) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L274 CegarLoopResult]: For program point L29(lines 29 152) no Hoare annotation was computed. [2020-10-27 01:35:58,251 INFO L270 CegarLoopResult]: At program point L87(lines 62 88) the Hoare annotation is: (let ((.cse1 (div main_~main__index2~0 4294967296)) (.cse0 (div main_~main__index1~0 4294967296))) (and (<= 1 main_~main____CPAchecker_TMP_0~1) (<= 1 (+ main_~main__index1~0 (* 4294967296 (div (+ (* main_~main__index2~0 (- 1)) (* .cse0 (- 4294967296)) (* .cse1 4294967296) 99998) 4294967296)))) (<= (+ main_~main__index1~0 (* 4294967296 .cse1) 1) (+ main_~main__index2~0 (* 4294967296 .cse0))))) [2020-10-27 01:35:58,252 INFO L274 CegarLoopResult]: For program point L21(lines 21 195) no Hoare annotation was computed. [2020-10-27 01:35:58,252 INFO L274 CegarLoopResult]: For program point L50(lines 50 138) no Hoare annotation was computed. [2020-10-27 01:35:58,252 INFO L270 CegarLoopResult]: At program point L79(lines 46 139) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~main__index2~0 4294967296)))) (and (<= main_~main__index2~0 (+ .cse0 99999)) (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296)))))) [2020-10-27 01:35:58,252 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 14 196) no Hoare annotation was computed. [2020-10-27 01:35:58,252 INFO L270 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: false [2020-10-27 01:35:58,252 INFO L274 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-10-27 01:35:58,252 INFO L274 CegarLoopResult]: For program point L71(lines 71 80) no Hoare annotation was computed. [2020-10-27 01:35:58,252 INFO L274 CegarLoopResult]: For program point L158(lines 158 179) no Hoare annotation was computed. [2020-10-27 01:35:58,252 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 14 196) the Hoare annotation is: (and (= |old(#length)| |#length|) (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:35:58,252 INFO L270 CegarLoopResult]: At program point L92(lines 60 93) the Hoare annotation is: false [2020-10-27 01:35:58,253 INFO L274 CegarLoopResult]: For program point L26(lines 26 185) no Hoare annotation was computed. [2020-10-27 01:35:58,253 INFO L270 CegarLoopResult]: At program point L146(lines 31 147) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~main__index2~0 4294967296)))) (and (<= main_~main__index2~0 (+ .cse0 99999)) (= main_~main____CPAchecker_TMP_0~0 1) (<= main_~main__loop_entered~0 (* 4294967296 (div main_~main__loop_entered~0 4294967296))) (<= 0 main_~main__loop_entered~0) (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296)))))) [2020-10-27 01:35:58,253 INFO L270 CegarLoopResult]: At program point L109(line 109) the Hoare annotation is: false [2020-10-27 01:35:58,253 INFO L274 CegarLoopResult]: For program point L109-1(line 109) no Hoare annotation was computed. [2020-10-27 01:35:58,253 INFO L270 CegarLoopResult]: At program point L167(line 167) the Hoare annotation is: false [2020-10-27 01:35:58,253 INFO L274 CegarLoopResult]: For program point L167-1(line 167) no Hoare annotation was computed. [2020-10-27 01:35:58,269 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,270 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,270 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,275 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,275 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,275 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:35:58 BoogieIcfgContainer [2020-10-27 01:35:58,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:35:58,284 INFO L168 Benchmark]: Toolchain (without parser) took 43973.29 ms. Allocated memory was 160.4 MB in the beginning and 348.1 MB in the end (delta: 187.7 MB). Free memory was 136.2 MB in the beginning and 147.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 177.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:35:58,284 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 160.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:35:58,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.79 ms. Allocated memory is still 160.4 MB. Free memory was 135.6 MB in the beginning and 124.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:35:58,286 INFO L168 Benchmark]: Boogie Preprocessor took 75.37 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:35:58,286 INFO L168 Benchmark]: RCFGBuilder took 646.69 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 139.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:35:58,287 INFO L168 Benchmark]: TraceAbstraction took 42930.07 ms. Allocated memory was 160.4 MB in the beginning and 348.1 MB in the end (delta: 187.7 MB). Free memory was 139.7 MB in the beginning and 147.1 MB in the end (delta: -7.4 MB). Peak memory consumption was 179.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:35:58,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 160.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 305.79 ms. Allocated memory is still 160.4 MB. Free memory was 135.6 MB in the beginning and 124.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.37 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 646.69 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 139.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 42930.07 ms. Allocated memory was 160.4 MB in the beginning and 348.1 MB in the end (delta: 187.7 MB). Free memory was 139.7 MB in the beginning and 147.1 MB in the end (delta: -7.4 MB). Peak memory consumption was 179.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 4294967296 * (((main__index2 * -1 + 4294967294) / 4294967296 * -4294967296 + main__index1 * -1 + 4294967296) / 4294967296) + main__index1 <= main__index2 + 1 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 98]: Loop Invariant [2020-10-27 01:35:58,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,303 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,303 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,303 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:35:58,303 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] <= unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) && unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) < 4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] + 1) && main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99998) && 4294967296 * (((main__index2 * -1 + 4294967294) / 4294967296 * -4294967296 + main__index1 * -1 + 4294967296) / 4294967296) + main__index1 <= main__index2 + 1) || main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (1 <= main____CPAchecker_TMP_0 && 1 <= main__index1 + 4294967296 * ((main__index2 * -1 + main__index1 / 4294967296 * -4294967296 + main__index2 / 4294967296 * 4294967296 + 99998) / 4294967296)) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && main____CPAchecker_TMP_0 == 1) && main__loop_entered <= 4294967296 * (main__loop_entered / 4294967296)) && 0 <= main__loop_entered) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 17.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 291 SDtfs, 256 SDslu, 377 SDs, 0 SdLazy, 698 SolverSat, 58 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 69 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 34 PreInvPairs, 44 NumberOfFragments, 378 HoareAnnotationTreeSize, 34 FomulaSimplifications, 1087 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 2393 FormulaSimplificationTreeSizeReductionInter, 17.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 81872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 7/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...