/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:34:47,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:34:47,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:34:47,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:34:47,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:34:47,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:34:47,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:34:47,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:34:47,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:34:47,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:34:47,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:34:47,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:34:47,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:34:47,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:34:47,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:34:47,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:34:47,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:34:47,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:34:47,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:34:47,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:34:47,198 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 [2021-05-02 13:34:47,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:34:47,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:34:47,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:34:47,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:34:47,221 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:34:47,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:34:47,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:34:47,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:34:47,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:34:47,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:34:47,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:34:47,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:34:47,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:34:47,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:34:47,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:34:47,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:34:47,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:34:47,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:34:47,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:34:47,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:34:47,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:34:47,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:34:47,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:34:47,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:34:47,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:34:47,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:34:47,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:34:47,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:34:47,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:34:47,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:34:47,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:34:47,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:34:47,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:34:47,476 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:34:47,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i [2021-05-02 13:34:47,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0efb7f9b/895028c7bb0546539b0d22d67359db9f/FLAGc59604609 [2021-05-02 13:34:47,878 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:34:47,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i [2021-05-02 13:34:47,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0efb7f9b/895028c7bb0546539b0d22d67359db9f/FLAGc59604609 [2021-05-02 13:34:48,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0efb7f9b/895028c7bb0546539b0d22d67359db9f [2021-05-02 13:34:48,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:34:48,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:34:48,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:34:48,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:34:48,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:34:48,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c0662e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48, skipping insertion in model container [2021-05-02 13:34:48,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:34:48,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:34:48,417 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-05-02 13:34:48,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:34:48,428 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:34:48,436 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-05-02 13:34:48,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:34:48,447 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:34:48,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48 WrapperNode [2021-05-02 13:34:48,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:34:48,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:34:48,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:34:48,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:34:48,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (1/1) ... [2021-05-02 13:34:48,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:34:48,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:34:48,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:34:48,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:34:48,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (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 [2021-05-02 13:34:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:34:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:34:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:34:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:34:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:34:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:34:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 13:34:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 13:34:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:34:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:34:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 13:34:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 13:34:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:34:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:34:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:34:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:34:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:34:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:34:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:34:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:34:48,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:34:48,681 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:34:48,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:34:48 BoogieIcfgContainer [2021-05-02 13:34:48,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:34:48,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:34:48,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:34:48,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:34:48,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:34:48" (1/3) ... [2021-05-02 13:34:48,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720479ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:34:48, skipping insertion in model container [2021-05-02 13:34:48,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:48" (2/3) ... [2021-05-02 13:34:48,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720479ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:34:48, skipping insertion in model container [2021-05-02 13:34:48,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:34:48" (3/3) ... [2021-05-02 13:34:48,686 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2021-05-02 13:34:48,689 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:34:48,692 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:34:48,702 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:34:48,716 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:34:48,717 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:34:48,717 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:34:48,717 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:34:48,717 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:34:48,717 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:34:48,717 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:34:48,717 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:34:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 13:34:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:34:48,744 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:34:48,745 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:34:48,745 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:34:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:34:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2021-05-02 13:34:48,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:34:48,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956085579] [2021-05-02 13:34:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:34:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:34:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:49,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:34:49,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956085579] [2021-05-02 13:34:49,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956085579] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:34:49,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:34:49,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 13:34:49,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087209046] [2021-05-02 13:34:49,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 13:34:49,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:34:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 13:34:49,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 13:34:49,049 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:34:49,268 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-02 13:34:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 13:34:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 13:34:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:34:49,273 INFO L225 Difference]: With dead ends: 42 [2021-05-02 13:34:49,273 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 13:34:49,275 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 185.7ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-05-02 13:34:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 13:34:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 13:34:49,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 13:34:49,295 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-02 13:34:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:34:49,295 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 13:34:49,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 13:34:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 13:34:49,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:34:49,296 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:34:49,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:34:49,296 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:34:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:34:49,297 INFO L82 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2021-05-02 13:34:49,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:34:49,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589529042] [2021-05-02 13:34:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:34:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:34:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:49,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:34:49,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589529042] [2021-05-02 13:34:49,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589529042] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:34:49,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:34:49,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 13:34:49,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746688283] [2021-05-02 13:34:49,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 13:34:49,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:34:49,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 13:34:49,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:34:49,377 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:34:49,446 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 13:34:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 13:34:49,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 13:34:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:34:49,447 INFO L225 Difference]: With dead ends: 20 [2021-05-02 13:34:49,447 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 13:34:49,448 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:34:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 13:34:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 13:34:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 13:34:49,451 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-02 13:34:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:34:49,451 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 13:34:49,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,451 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 13:34:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 13:34:49,452 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:34:49,452 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:34:49,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 13:34:49,452 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:34:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:34:49,453 INFO L82 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2021-05-02 13:34:49,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:34:49,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021634423] [2021-05-02 13:34:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:34:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:49,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:34:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:49,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:34:49,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021634423] [2021-05-02 13:34:49,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021634423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:34:49,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082829447] [2021-05-02 13:34:49,529 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 [2021-05-02 13:34:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:49,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 13:34:49,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:34:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:49,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:49,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082829447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:34:49,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-02 13:34:49,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2021-05-02 13:34:49,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894064030] [2021-05-02 13:34:49,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 13:34:49,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:34:49,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 13:34:49,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-02 13:34:49,727 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:34:49,764 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-05-02 13:34:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:34:49,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 13:34:49,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:34:49,764 INFO L225 Difference]: With dead ends: 15 [2021-05-02 13:34:49,765 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:34:49,765 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-05-02 13:34:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:34:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:34:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 13:34:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:34:49,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-02 13:34:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:34:49,766 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:34:49,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:34:49,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:34:49,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 13:34:49,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:34:50,105 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-02 13:34:50,106 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-02 13:34:50,106 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-02 13:34:50,106 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:34:50,106 INFO L194 CegarLoopUtils]: 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)|)) [2021-05-02 13:34:50,106 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:34:50,106 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:34:50,106 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 13:34:50,106 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:34:50,107 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point L26(line 26) no Hoare annotation was computed. [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2021-05-02 13:34:50,107 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (= main_~y~0 main_~x~0) (< 0 (+ main_~x~0 1))) [2021-05-02 13:34:50,107 INFO L194 CegarLoopUtils]: At program point L23-3(lines 23 27) the Hoare annotation is: (and (<= main_~y~0 0) (< 0 (+ main_~y~0 1))) [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 13:34:50,107 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-05-02 13:34:50,108 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-02 13:34:50,108 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:34:50,108 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:34:50,108 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-05-02 13:34:50,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 01:34:50 BoogieIcfgContainer [2021-05-02 13:34:50,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 13:34:50,120 INFO L168 Benchmark]: Toolchain (without parser) took 1810.99 ms. Allocated memory was 202.4 MB in the beginning and 243.3 MB in the end (delta: 40.9 MB). Free memory was 166.4 MB in the beginning and 195.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:50,120 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 202.4 MB. Free memory is still 182.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:34:50,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.42 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 156.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:50,120 INFO L168 Benchmark]: Boogie Preprocessor took 32.26 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 185.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:50,121 INFO L168 Benchmark]: RCFGBuilder took 200.87 ms. Allocated memory is still 202.4 MB. Free memory was 185.3 MB in the beginning and 171.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:50,121 INFO L168 Benchmark]: TraceAbstraction took 1436.50 ms. Allocated memory was 202.4 MB in the beginning and 243.3 MB in the end (delta: 40.9 MB). Free memory was 171.0 MB in the beginning and 195.2 MB in the end (delta: -24.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:50,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 202.4 MB. Free memory is still 182.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 137.42 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 156.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.26 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 185.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 200.87 ms. Allocated memory is still 202.4 MB. Free memory was 185.3 MB in the beginning and 171.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1436.50 ms. Allocated memory was 202.4 MB in the beginning and 243.3 MB in the end (delta: 40.9 MB). Free memory was 171.0 MB in the beginning and 195.2 MB in the end (delta: -24.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1266.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 21.1ms, AutomataDifference: 344.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 123.7ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 45 SDslu, 71 SDs, 0 SdLazy, 95 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 352.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 47 HoareAnnotationTreeSize, 10 FomulaSimplifications, 115 FormulaSimplificationTreeSizeReduction, 51.6ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 65.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 12.3ms SsaConstructionTime, 75.0ms SatisfiabilityAnalysisTime, 445.4ms InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 2 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: y == x && 0 < x + 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...