/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-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:36:36,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:36:36,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:36:36,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:36:36,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:36:36,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:36:36,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:36:36,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:36:36,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:36:36,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:36:36,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:36:36,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:36:36,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:36:36,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:36:36,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:36:36,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:36:36,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:36:36,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:36:36,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:36:36,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:36:36,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:36:36,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:36:36,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:36:36,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:36:36,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:36:36,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:36:36,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:36:36,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:36:36,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:36:36,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:36:36,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:36:36,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:36:36,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:36:36,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:36:36,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:36:36,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:36:36,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:36:36,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:36:36,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:36:36,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:36:36,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:36:36,744 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 01:36:36,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:36:36,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:36:36,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:36:36,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:36:36,777 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:36:36,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:36:36,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:36:36,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:36:36,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:36:36,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:36:36,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:36:36,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:36:36,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:36:36,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:36:36,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:36:36,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:36:36,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:36:36,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:36:36,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:36:36,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:36:36,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:36:36,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:36:36,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:36:36,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:36:36,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:36:36,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:36:36,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:36:36,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:36:36,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:36:36,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:36:37,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:36:37,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:36:37,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:36:37,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:36:37,279 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:36:37,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-10-27 01:36:37,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228591815/c64d70180b684d36bbed210dff7d2eb6/FLAG3b6e67166 [2020-10-27 01:36:38,069 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:36:38,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-10-27 01:36:38,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228591815/c64d70180b684d36bbed210dff7d2eb6/FLAG3b6e67166 [2020-10-27 01:36:38,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228591815/c64d70180b684d36bbed210dff7d2eb6 [2020-10-27 01:36:38,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:36:38,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:36:38,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:36:38,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:36:38,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:36:38,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104476a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38, skipping insertion in model container [2020-10-27 01:36:38,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:36:38,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:36:38,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:36:38,619 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:36:38,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:36:38,654 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:36:38,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38 WrapperNode [2020-10-27 01:36:38,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:36:38,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:36:38,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:36:38,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:36:38,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (1/1) ... [2020-10-27 01:36:38,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:36:38,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:36:38,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:36:38,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:36:38,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (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 01:36:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:36:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:36:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:36:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:36:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:36:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:36:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:36:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:36:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:36:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:36:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:36:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:36:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:36:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:36:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:36:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:36:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:36:39,139 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:36:39,140 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:36:39,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:36:39 BoogieIcfgContainer [2020-10-27 01:36:39,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:36:39,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:36:39,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:36:39,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:36:39,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:36:38" (1/3) ... [2020-10-27 01:36:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a8bd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:36:39, skipping insertion in model container [2020-10-27 01:36:39,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:38" (2/3) ... [2020-10-27 01:36:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a8bd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:36:39, skipping insertion in model container [2020-10-27 01:36:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:36:39" (3/3) ... [2020-10-27 01:36:39,159 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2020-10-27 01:36:39,189 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:36:39,202 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:36:39,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:36:39,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:36:39,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:36:39,309 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:36:39,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:36:39,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:36:39,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:36:39,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:36:39,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:36:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-27 01:36:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:36:39,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:36:39,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:36:39,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:36:39,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:36:39,350 INFO L82 PathProgramCache]: Analyzing trace with hash -113637438, now seen corresponding path program 1 times [2020-10-27 01:36:39,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:36:39,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368315572] [2020-10-27 01:36:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:36:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:36:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:39,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:36:39,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:36:39,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:36:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 01:36:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:36:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:36:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:36:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:36:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:36:39,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:36:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:36:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:39,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:36:39,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:36:39,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:36:39,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:36:39,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:36:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:36:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:36:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:36:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:36:39,951 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 01:36:39,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368315572] [2020-10-27 01:36:39,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:36:39,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:36:39,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202198728] [2020-10-27 01:36:39,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:36:39,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:36:39,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:36:39,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:36:39,979 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-10-27 01:36:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:36:40,139 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-10-27 01:36:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:36:40,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-27 01:36:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:36:40,151 INFO L225 Difference]: With dead ends: 41 [2020-10-27 01:36:40,151 INFO L226 Difference]: Without dead ends: 21 [2020-10-27 01:36:40,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:36:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-27 01:36:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-10-27 01:36:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-27 01:36:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-27 01:36:40,199 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-10-27 01:36:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:36:40,199 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-27 01:36:40,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:36:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-27 01:36:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:36:40,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:36:40,201 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:36:40,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:36:40,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:36:40,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:36:40,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1827489152, now seen corresponding path program 1 times [2020-10-27 01:36:40,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:36:40,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742650087] [2020-10-27 01:36:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:36:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:36:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:40,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:36:40,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:36:40,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:36:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 01:36:40,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:36:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:36:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 01:36:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:36:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:36:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:36:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:36:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:40,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:36:40,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:36:40,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:36:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:36:40,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:36:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:36:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:36:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:36:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:36:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:36:40,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742650087] [2020-10-27 01:36:40,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:36:40,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:36:40,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679267792] [2020-10-27 01:36:40,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:36:40,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:36:40,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:36:40,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:36:40,841 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2020-10-27 01:36:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:36:45,268 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2020-10-27 01:36:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:36:45,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-27 01:36:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:36:45,270 INFO L225 Difference]: With dead ends: 37 [2020-10-27 01:36:45,270 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 01:36:45,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:36:45,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 01:36:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-27 01:36:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-27 01:36:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-27 01:36:45,279 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-10-27 01:36:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:36:45,280 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-27 01:36:45,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:36:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-27 01:36:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:36:45,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:36:45,281 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:36:45,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:36:45,281 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:36:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:36:45,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1571903080, now seen corresponding path program 1 times [2020-10-27 01:36:45,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:36:45,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921190464] [2020-10-27 01:36:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:36:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:36:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:45,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:36:45,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 01:36:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:36:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 01:36:45,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:36:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:36:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:36:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:36:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:36:45,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:36:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:36:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:45,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:36:45,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:36:45,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:36:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:36:45,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:36:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:36:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:36:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:36:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:36:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:36:45,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921190464] [2020-10-27 01:36:45,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:36:45,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:36:45,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388864096] [2020-10-27 01:36:45,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:36:45,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:36:45,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:36:45,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:36:45,546 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-27 01:36:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:36:49,917 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2020-10-27 01:36:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:36:49,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 01:36:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:36:49,918 INFO L225 Difference]: With dead ends: 38 [2020-10-27 01:36:49,918 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:36:49,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:36:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:36:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:36:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:36:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:36:49,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-27 01:36:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:36:49,921 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:36:49,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:36:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:36:49,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:36:49,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:36:49,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:36:50,219 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-10-27 01:36:50,223 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 01:36:50,223 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 01:36:50,223 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 01:36:50,224 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 01:36:50,224 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:36:50,224 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_107~0 |old(~__return_107~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:36:50,224 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:36:50,224 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:36:50,224 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:36:50,225 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:36:50,225 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:36:50,225 INFO L274 CegarLoopResult]: For program point L27(lines 27 49) no Hoare annotation was computed. [2020-10-27 01:36:50,225 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 9 78) no Hoare annotation was computed. [2020-10-27 01:36:50,225 INFO L274 CegarLoopResult]: For program point L54(lines 54 76) no Hoare annotation was computed. [2020-10-27 01:36:50,225 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 9 78) no Hoare annotation was computed. [2020-10-27 01:36:50,225 INFO L270 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: false [2020-10-27 01:36:50,226 INFO L274 CegarLoopResult]: For program point L63-1(line 63) no Hoare annotation was computed. [2020-10-27 01:36:50,226 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 9 78) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-10-27 01:36:50,226 INFO L274 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-10-27 01:36:50,226 INFO L274 CegarLoopResult]: For program point L18(lines 18 50) no Hoare annotation was computed. [2020-10-27 01:36:50,226 INFO L274 CegarLoopResult]: For program point L16(lines 16 77) no Hoare annotation was computed. [2020-10-27 01:36:50,227 INFO L270 CegarLoopResult]: At program point L47(lines 10 78) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-10-27 01:36:50,227 INFO L274 CegarLoopResult]: For program point L37(lines 37 48) no Hoare annotation was computed. [2020-10-27 01:36:50,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:36:50 BoogieIcfgContainer [2020-10-27 01:36:50,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:36:50,250 INFO L168 Benchmark]: Toolchain (without parser) took 11846.20 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.8 MB in the beginning and 127.7 MB in the end (delta: -906.2 kB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:36:50,251 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:36:50,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.57 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:36:50,253 INFO L168 Benchmark]: Boogie Preprocessor took 32.03 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:36:50,254 INFO L168 Benchmark]: RCFGBuilder took 453.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 101.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:36:50,255 INFO L168 Benchmark]: TraceAbstraction took 11104.66 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.7 MB in the beginning and 127.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:36:50,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.57 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.03 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 453.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 101.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11104.66 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.7 MB in the beginning and 127.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * 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: 10]: Loop Invariant Derived loop invariant: ((\old(__return_107) == __return_107 && main__y / 4294967296 <= 0) && 1 <= main__y) || (\old(__return_107) == __return_107 && main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 65 SDslu, 32 SDs, 0 SdLazy, 93 SolverSat, 13 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 102 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 5798 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 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...