/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:55:23,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:55:23,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:55:23,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:55:23,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:55:23,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:55:23,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:55:23,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:55:23,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:55:23,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:55:23,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:55:23,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:55:23,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:55:23,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:55:23,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:55:23,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:55:23,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:55:23,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:55:23,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:55:23,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:55:23,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:55:23,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:55:23,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:55:23,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:55:23,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:55:23,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:55:23,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:55:23,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:55:23,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:55:23,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:55:23,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:55:23,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:55:23,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:55:23,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:55:23,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:55:23,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:55:23,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:55:23,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:55:23,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:55:23,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:55:23,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:55:23,754 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 19:55:23,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:55:23,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:55:23,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:55:23,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:55:23,813 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:55:23,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:55:23,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:55:23,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:55:23,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:55:23,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:55:23,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:55:23,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:55:23,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:55:23,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:55:23,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:55:23,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:55:23,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:55:23,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:55:23,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:55:23,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:55:23,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:55:23,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:55:23,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:55:23,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:55:23,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:55:23,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:55:23,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:55:23,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:55:23,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:55:23,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:55:24,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:55:24,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:55:24,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:55:24,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:55:24,269 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:55:24,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-10-27 19:55:24,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e42438a1/f66d2fbfcaf44749b713c307270bf11c/FLAG72d5db095 [2020-10-27 19:55:24,992 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:55:24,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-10-27 19:55:25,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e42438a1/f66d2fbfcaf44749b713c307270bf11c/FLAG72d5db095 [2020-10-27 19:55:25,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e42438a1/f66d2fbfcaf44749b713c307270bf11c [2020-10-27 19:55:25,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:55:25,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:55:25,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:25,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:55:25,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:55:25,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5beba7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25, skipping insertion in model container [2020-10-27 19:55:25,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:55:25,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:55:25,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:25,615 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:55:25,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:25,676 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:55:25,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25 WrapperNode [2020-10-27 19:55:25,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:25,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:55:25,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:55:25,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:55:25,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (1/1) ... [2020-10-27 19:55:25,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:55:25,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:55:25,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:55:25,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:55:25,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (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 19:55:25,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:55:25,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:55:25,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:55:25,919 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 19:55:25,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:55:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:55:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:55:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:55:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:55:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:55:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 19:55:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:55:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:55:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:55:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:55:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:55:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:55:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:55:26,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:55:26,268 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:55:26,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:26 BoogieIcfgContainer [2020-10-27 19:55:26,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:55:26,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:55:26,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:55:26,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:55:26,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:55:25" (1/3) ... [2020-10-27 19:55:26,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d138196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:26, skipping insertion in model container [2020-10-27 19:55:26,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:25" (2/3) ... [2020-10-27 19:55:26,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d138196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:26, skipping insertion in model container [2020-10-27 19:55:26,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:26" (3/3) ... [2020-10-27 19:55:26,282 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-10-27 19:55:26,298 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:55:26,303 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:55:26,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:55:26,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:55:26,351 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:55:26,351 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:55:26,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:55:26,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:55:26,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:55:26,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:55:26,352 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:55:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-27 19:55:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 19:55:26,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:26,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:26,380 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:26,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1364032089, now seen corresponding path program 1 times [2020-10-27 19:55:26,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:26,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266703177] [2020-10-27 19:55:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:26,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:55:26,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 19:55:26,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 19:55:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:55:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:26,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 19:55:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:26,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:55:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:26,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:55:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:55:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:26,929 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 19:55:26,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266703177] [2020-10-27 19:55:26,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:26,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:55:26,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095274160] [2020-10-27 19:55:26,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 19:55:26,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:26,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 19:55:26,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 19:55:26,956 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-27 19:55:27,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:27,079 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-27 19:55:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:55:27,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-27 19:55:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:27,090 INFO L225 Difference]: With dead ends: 40 [2020-10-27 19:55:27,090 INFO L226 Difference]: Without dead ends: 18 [2020-10-27 19:55:27,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 19:55:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-27 19:55:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-27 19:55:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-27 19:55:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-27 19:55:27,138 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-27 19:55:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:27,138 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-27 19:55:27,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 19:55:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-27 19:55:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 19:55:27,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:27,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:27,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:55:27,141 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:27,142 INFO L82 PathProgramCache]: Analyzing trace with hash 513696940, now seen corresponding path program 1 times [2020-10-27 19:55:27,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:27,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572696398] [2020-10-27 19:55:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:27,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 19:55:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 19:55:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:55:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:55:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 19:55:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:27,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:55:27,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:55:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:27,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:27,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:27,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:55:27,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:55:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:27,602 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 19:55:27,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572696398] [2020-10-27 19:55:27,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:27,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:55:27,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146243767] [2020-10-27 19:55:27,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:55:27,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:27,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:55:27,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:55:27,607 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-10-27 19:55:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:27,732 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-27 19:55:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:55:27,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-27 19:55:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:27,735 INFO L225 Difference]: With dead ends: 29 [2020-10-27 19:55:27,735 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 19:55:27,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:55:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 19:55:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-27 19:55:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 19:55:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-27 19:55:27,744 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2020-10-27 19:55:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:27,745 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-27 19:55:27,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:55:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-27 19:55:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 19:55:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:27,746 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:27,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:55:27,747 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash -983927919, now seen corresponding path program 1 times [2020-10-27 19:55:27,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:27,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864349314] [2020-10-27 19:55:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:27,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:27,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:55:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 19:55:27,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:55:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:55:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:55:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:28,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:28,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:28,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:55:28,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 19:55:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:28,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:28,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:28,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:28,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:28,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:55:28,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:55:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:55:28,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864349314] [2020-10-27 19:55:28,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:55:28,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:55:28,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104092985] [2020-10-27 19:55:28,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:55:28,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:28,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:55:28,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:55:28,082 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2020-10-27 19:55:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:28,235 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-27 19:55:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:55:28,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 19:55:28,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:28,237 INFO L225 Difference]: With dead ends: 31 [2020-10-27 19:55:28,237 INFO L226 Difference]: Without dead ends: 22 [2020-10-27 19:55:28,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:55:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-27 19:55:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-27 19:55:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-27 19:55:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-27 19:55:28,245 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2020-10-27 19:55:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:28,246 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-27 19:55:28,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:55:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-27 19:55:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 19:55:28,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:28,247 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:28,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:55:28,248 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:28,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1387373258, now seen corresponding path program 2 times [2020-10-27 19:55:28,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:28,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643722646] [2020-10-27 19:55:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:28,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:28,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 19:55:28,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:55:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 19:55:28,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:55:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:55:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:55:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:29,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:29,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:55:29,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 19:55:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:29,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:29,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:29,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:29,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:55:29,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:55:29,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:29,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:55:29,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:55:29,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643722646] [2020-10-27 19:55:29,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:55:29,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 19:55:29,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094002890] [2020-10-27 19:55:29,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 19:55:29,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:29,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 19:55:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:55:29,103 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 10 states. [2020-10-27 19:55:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:29,586 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-27 19:55:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:55:29,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-27 19:55:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:29,588 INFO L225 Difference]: With dead ends: 22 [2020-10-27 19:55:29,588 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 19:55:29,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:55:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 19:55:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 19:55:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 19:55:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 19:55:29,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-27 19:55:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:29,591 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 19:55:29,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 19:55:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 19:55:29,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 19:55:29,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:55:29,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 19:55:29,786 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 19:55:29,787 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 19:55:29,787 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 19:55:29,787 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 19:55:29,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:29,787 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)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 19:55:29,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:29,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:29,788 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 19:55:29,788 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 19:55:29,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:29,788 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-27 19:55:29,788 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 33) no Hoare annotation was computed. [2020-10-27 19:55:29,789 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 16 40) no Hoare annotation was computed. [2020-10-27 19:55:29,789 INFO L274 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-10-27 19:55:29,789 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2020-10-27 19:55:29,789 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 16 40) no Hoare annotation was computed. [2020-10-27 19:55:29,789 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-10-27 19:55:29,789 INFO L270 CegarLoopResult]: At program point L32(lines 17 40) the Hoare annotation is: false [2020-10-27 19:55:29,789 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 16 40) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 19:55:29,790 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2020-10-27 19:55:29,790 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= (+ (* .cse0 8) |main_~#ad1~0.offset|) main_~pa~0.offset) (<= (* 8 main_~i~0) (* 8 .cse0)))) [2020-10-27 19:55:29,790 INFO L270 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (let ((.cse0 (* 8 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= (+ .cse0 |main_~#ad1~0.offset|) main_~pa~0.offset) (<= (* 8 main_~i~0) .cse0))) [2020-10-27 19:55:29,790 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 11 14) the Hoare annotation is: true [2020-10-27 19:55:29,790 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 11 14) no Hoare annotation was computed. [2020-10-27 19:55:29,791 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 11 14) no Hoare annotation was computed. [2020-10-27 19:55:29,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:29,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:29,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:29,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:29,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:55:29 BoogieIcfgContainer [2020-10-27 19:55:29,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:55:29,815 INFO L168 Benchmark]: Toolchain (without parser) took 4497.40 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 144.7 MB in the beginning and 174.2 MB in the end (delta: -29.5 MB). Peak memory consumption was 115.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:29,816 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 161.5 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:55:29,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.51 ms. Allocated memory is still 161.5 MB. Free memory was 144.2 MB in the beginning and 134.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:29,818 INFO L168 Benchmark]: Boogie Preprocessor took 142.84 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 145.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:29,819 INFO L168 Benchmark]: RCFGBuilder took 448.19 ms. Allocated memory is still 161.5 MB. Free memory was 145.2 MB in the beginning and 130.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:29,820 INFO L168 Benchmark]: TraceAbstraction took 3539.34 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 130.2 MB in the beginning and 174.2 MB in the end (delta: -44.0 MB). Peak memory consumption was 102.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:29,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 161.5 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 351.51 ms. Allocated memory is still 161.5 MB. Free memory was 144.2 MB in the beginning and 134.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.84 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 145.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 448.19 ms. Allocated memory is still 161.5 MB. Free memory was 145.2 MB in the beginning and 130.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3539.34 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 130.2 MB in the beginning and 174.2 MB in the end (delta: -44.0 MB). Peak memory consumption was 102.3 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 28]: Loop Invariant [2020-10-27 19:55:29,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:29,832 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:29,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:55:29,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (pa == ad1 && unknown-#memory_int-unknown[pa][pa] * 8 + ad1 == pa) && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa] - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 18 SDslu, 81 SDs, 0 SdLazy, 147 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 18 NumberOfFragments, 106 HoareAnnotationTreeSize, 15 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 54 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 7351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/8 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...