/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:49,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:49,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:49,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:49,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:49,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:49,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:49,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:49,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:49,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:49,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:49,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:49,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:49,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:49,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:49,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:49,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:49,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:49,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:49,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:49,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:49,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:49,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:49,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:49,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:45:49,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:49,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:49,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:49,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:45:49,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:49,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:49,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:49,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:49,807 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:49,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:49,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:49,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:49,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:49,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:49,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:49,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:49,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:49,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:49,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:49,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:49,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:49,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:49,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:49,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:49,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:49,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:49,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:49,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:49,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:49,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:49,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:49,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:49,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:49,812 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:50,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:50,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:50,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:50,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:50,281 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:50,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-11-06 22:45:50,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caa41274/6d2cc92fac344476a2a73ffa3a38e577/FLAGf5e3c1df6 [2020-11-06 22:45:51,067 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:51,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-11-06 22:45:51,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caa41274/6d2cc92fac344476a2a73ffa3a38e577/FLAGf5e3c1df6 [2020-11-06 22:45:51,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caa41274/6d2cc92fac344476a2a73ffa3a38e577 [2020-11-06 22:45:51,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:51,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:51,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:51,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:51,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:51,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3c2c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51, skipping insertion in model container [2020-11-06 22:45:51,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:51,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:51,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:51,668 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:51,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:51,707 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:51,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51 WrapperNode [2020-11-06 22:45:51,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:51,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:51,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:51,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:51,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... [2020-11-06 22:45:51,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:51,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:51,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:51,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:51,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 22:45:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:45:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:45:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:45:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:45:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:45:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:52,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:52,206 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:45:52,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:52 BoogieIcfgContainer [2020-11-06 22:45:52,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:52,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:52,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:52,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:52,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:51" (1/3) ... [2020-11-06 22:45:52,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118163b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:52, skipping insertion in model container [2020-11-06 22:45:52,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:51" (2/3) ... [2020-11-06 22:45:52,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118163b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:52, skipping insertion in model container [2020-11-06 22:45:52,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:52" (3/3) ... [2020-11-06 22:45:52,221 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-11-06 22:45:52,263 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:52,274 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:52,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:52,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:52,337 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:52,337 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:52,337 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:52,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:52,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:52,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:52,338 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-06 22:45:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:45:52,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:52,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:52,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1858276272, now seen corresponding path program 1 times [2020-11-06 22:45:52,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:52,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88525745] [2020-11-06 22:45:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:52,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:52,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88525745] [2020-11-06 22:45:52,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:52,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:45:52,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785897600] [2020-11-06 22:45:52,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:45:52,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:52,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:45:52,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:45:52,992 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-11-06 22:45:53,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:53,406 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-11-06 22:45:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:45:53,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-06 22:45:53,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:53,422 INFO L225 Difference]: With dead ends: 52 [2020-11-06 22:45:53,422 INFO L226 Difference]: Without dead ends: 24 [2020-11-06 22:45:53,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:45:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-06 22:45:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-06 22:45:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-06 22:45:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-06 22:45:53,489 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2020-11-06 22:45:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:53,489 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-06 22:45:53,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:45:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-06 22:45:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:45:53,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:53,491 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:53,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:45:53,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:53,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:53,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1093378590, now seen corresponding path program 1 times [2020-11-06 22:45:53,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:53,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538611843] [2020-11-06 22:45:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:53,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-06 22:45:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:53,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538611843] [2020-11-06 22:45:53,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:53,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:45:53,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632518996] [2020-11-06 22:45:53,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:45:53,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:53,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:45:53,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:45:53,674 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2020-11-06 22:45:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:53,974 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-11-06 22:45:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:45:53,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-06 22:45:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:53,977 INFO L225 Difference]: With dead ends: 36 [2020-11-06 22:45:53,977 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:45:53,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:45:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:45:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-06 22:45:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 22:45:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-06 22:45:53,996 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2020-11-06 22:45:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:53,997 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-06 22:45:53,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:45:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-06 22:45:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-06 22:45:54,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:54,000 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:54,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:45:54,001 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1123935262, now seen corresponding path program 1 times [2020-11-06 22:45:54,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:54,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310822482] [2020-11-06 22:45:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-06 22:45:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:45:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-06 22:45:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-06 22:45:54,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310822482] [2020-11-06 22:45:54,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387053114] [2020-11-06 22:45:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:54,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:45:54,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:54,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:54,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-06 22:45:54,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:54,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-11-06 22:45:54,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279053888] [2020-11-06 22:45:54,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-06 22:45:54,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-06 22:45:54,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:45:54,435 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 12 states. [2020-11-06 22:45:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:54,801 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-11-06 22:45:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:45:54,802 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-11-06 22:45:54,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:54,803 INFO L225 Difference]: With dead ends: 44 [2020-11-06 22:45:54,803 INFO L226 Difference]: Without dead ends: 40 [2020-11-06 22:45:54,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:45:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-06 22:45:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-11-06 22:45:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-06 22:45:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-06 22:45:54,816 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 32 [2020-11-06 22:45:54,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:54,817 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-06 22:45:54,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-06 22:45:54,817 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-06 22:45:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-06 22:45:54,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:54,819 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:55,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:45:55,033 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:55,035 INFO L82 PathProgramCache]: Analyzing trace with hash -511891938, now seen corresponding path program 2 times [2020-11-06 22:45:55,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:55,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980669978] [2020-11-06 22:45:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:55,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-06 22:45:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:45:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:55,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-06 22:45:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:55,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 22:45:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:45:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-11-06 22:45:55,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980669978] [2020-11-06 22:45:55,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334922496] [2020-11-06 22:45:55,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:55,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:45:55,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:55,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:45:55,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:55,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-11-06 22:45:55,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:55,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-11-06 22:45:55,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176838938] [2020-11-06 22:45:55,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:45:55,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:55,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:45:55,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:45:55,365 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 9 states. [2020-11-06 22:45:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:55,603 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-06 22:45:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:45:55,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-11-06 22:45:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:55,606 INFO L225 Difference]: With dead ends: 39 [2020-11-06 22:45:55,606 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:45:55,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:45:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:45:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:45:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:45:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:45:55,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-11-06 22:45:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:55,609 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:45:55,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:45:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:45:55,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:45:55,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:55,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:45:56,056 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:45:56,057 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:45:56,057 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:45:56,057 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:45:56,057 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:45:56,057 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:56,058 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-06 22:45:56,058 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:56,058 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:56,059 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:45:56,059 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:45:56,059 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:56,059 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-06 22:45:56,060 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:45:56,060 INFO L266 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:45:56,060 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:45:56,060 INFO L266 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-06 22:45:56,061 INFO L266 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-11-06 22:45:56,063 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 45) the Hoare annotation is: true [2020-11-06 22:45:56,063 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 24 45) no Hoare annotation was computed. [2020-11-06 22:45:56,063 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 24 45) no Hoare annotation was computed. [2020-11-06 22:45:56,063 INFO L269 CegarLoopResult]: At program point L44(lines 25 45) the Hoare annotation is: true [2020-11-06 22:45:56,063 INFO L266 CegarLoopResult]: For program point L42(lines 38 43) no Hoare annotation was computed. [2020-11-06 22:45:56,064 INFO L262 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-11-06 22:45:56,064 INFO L262 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-11-06 22:45:56,064 INFO L262 CegarLoopResult]: At program point L38-2(lines 38 43) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2020-11-06 22:45:56,064 INFO L266 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:45:56,064 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-06 22:45:56,064 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:45:56,065 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:45:56,065 INFO L266 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-06 22:45:56,065 INFO L266 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-06 22:45:56,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:56 BoogieIcfgContainer [2020-11-06 22:45:56,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:56,093 INFO L168 Benchmark]: Toolchain (without parser) took 4654.63 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 107.6 MB in the beginning and 111.6 MB in the end (delta: -4.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:56,094 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.4 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:56,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.35 ms. Allocated memory is still 151.0 MB. Free memory was 107.0 MB in the beginning and 97.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:56,098 INFO L168 Benchmark]: Boogie Preprocessor took 67.06 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 133.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:56,104 INFO L168 Benchmark]: RCFGBuilder took 431.86 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 120.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:56,105 INFO L168 Benchmark]: TraceAbstraction took 3875.65 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 119.8 MB in the beginning and 111.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 41.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:56,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.4 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.35 ms. Allocated memory is still 151.0 MB. Free memory was 107.0 MB in the beginning and 97.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.06 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 133.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.86 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 120.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3875.65 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 119.8 MB in the beginning and 111.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 41.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 85 SDslu, 123 SDs, 0 SdLazy, 305 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 28 PreInvPairs, 39 NumberOfFragments, 70 HoareAnnotationTreeSize, 28 FomulaSimplifications, 281 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 239 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 14005 SizeOfPredicates, 9 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 150/164 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...