/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/benchmark37_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:35:21,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:35:21,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:35:21,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:35:21,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:35:21,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:35:21,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:35:21,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:35:21,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:35:21,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:35:21,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:35:21,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:35:21,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:35:21,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:35:21,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:35:21,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:35:21,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:35:21,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:35:21,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:35:21,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:35:21,486 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 13:35:21,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:35:21,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:35:21,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:35:21,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:35:21,539 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:35:21,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:35:21,540 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:35:21,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:35:21,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:35:21,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:35:21,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:35:21,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:35:21,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:35:21,541 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:35:21,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:35:21,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:35:21,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:35:21,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:35:21,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:35:21,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:35:21,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:35:21,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:35:22,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:35:22,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:35:22,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:35:22,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:35:22,052 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:35:22,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark37_conjunctive.i [2021-05-02 13:35:22,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/383258bf5/f3e17262176e48178f21968842c3360c/FLAG06f7882c8 [2021-05-02 13:35:22,757 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:35:22,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark37_conjunctive.i [2021-05-02 13:35:22,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/383258bf5/f3e17262176e48178f21968842c3360c/FLAG06f7882c8 [2021-05-02 13:35:23,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/383258bf5/f3e17262176e48178f21968842c3360c [2021-05-02 13:35:23,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:35:23,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:35:23,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:35:23,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:35:23,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:35:23,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ea4027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23, skipping insertion in model container [2021-05-02 13:35:23,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:35:23,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:35:23,364 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/benchmark37_conjunctive.i[873,886] [2021-05-02 13:35:23,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:35:23,391 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:35:23,415 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/benchmark37_conjunctive.i[873,886] [2021-05-02 13:35:23,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:35:23,472 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:35:23,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23 WrapperNode [2021-05-02 13:35:23,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:35:23,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:35:23,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:35:23,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:35:23,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (1/1) ... [2021-05-02 13:35:23,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:35:23,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:35:23,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:35:23,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:35:23,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (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 13:35:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:35:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:35:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:35:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:35:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:35:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:35:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 13:35:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 13:35:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:35:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:35:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 13:35:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 13:35:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:35:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:35:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:35:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:35:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:35:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:35:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:35:23,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:35:24,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:35:24,014 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:35:24,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:35:24 BoogieIcfgContainer [2021-05-02 13:35:24,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:35:24,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:35:24,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:35:24,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:35:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:35:23" (1/3) ... [2021-05-02 13:35:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9931564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:35:24, skipping insertion in model container [2021-05-02 13:35:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:23" (2/3) ... [2021-05-02 13:35:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9931564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:35:24, skipping insertion in model container [2021-05-02 13:35:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:35:24" (3/3) ... [2021-05-02 13:35:24,032 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark37_conjunctive.i [2021-05-02 13:35:24,036 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:35:24,038 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:35:24,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:35:24,131 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:35:24,131 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:35:24,131 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:35:24,131 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:35:24,131 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:35:24,131 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:35:24,132 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:35:24,132 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:35:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 13:35:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:35:24,177 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:24,178 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:24,178 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2021-05-02 13:35:24,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:24,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93693313] [2021-05-02 13:35:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:24,642 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 13:35:24,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:24,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93693313] [2021-05-02 13:35:24,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93693313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:35:24,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:35:24,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 13:35:24,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235540919] [2021-05-02 13:35:24,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 13:35:24,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 13:35:24,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 13:35:24,677 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 13:35:25,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:25,069 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-02 13:35:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:35:25,071 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 13:35:25,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:25,074 INFO L225 Difference]: With dead ends: 32 [2021-05-02 13:35:25,075 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:35:25,077 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 346.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-02 13:35:25,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:35:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:35:25,091 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 13:35:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:35:25,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-02 13:35:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:25,116 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:35:25,116 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 13:35:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:35:25,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:35:25,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:35:25,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:35:25,348 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-02 13:35:25,348 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-02 13:35:25,348 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-02 13:35:25,348 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:35:25,349 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 13:35:25,349 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:35:25,349 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:35:25,349 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 13:35:25,349 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:35:25,349 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:35:25,350 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2021-05-02 13:35:25,350 INFO L198 CegarLoopUtils]: For program point L27(line 27) no Hoare annotation was computed. [2021-05-02 13:35:25,350 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 29) no Hoare annotation was computed. [2021-05-02 13:35:25,350 INFO L198 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2021-05-02 13:35:25,350 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 26) the Hoare annotation is: (and (<= 0 main_~x~0) (= main_~y~0 main_~x~0)) [2021-05-02 13:35:25,350 INFO L194 CegarLoopUtils]: At program point L23-3(lines 23 26) the Hoare annotation is: (and (<= 0 main_~x~0) (= main_~y~0 main_~x~0)) [2021-05-02 13:35:25,350 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 29) no Hoare annotation was computed. [2021-05-02 13:35:25,350 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 13:35:25,351 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-05-02 13:35:25,351 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-02 13:35:25,351 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:35:25,351 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:35:25,351 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-05-02 13:35:25,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 01:35:25 BoogieIcfgContainer [2021-05-02 13:35:25,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 13:35:25,373 INFO L168 Benchmark]: Toolchain (without parser) took 2252.53 ms. Allocated memory is still 192.9 MB. Free memory was 157.6 MB in the beginning and 100.3 MB in the end (delta: 57.3 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:25,374 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 192.9 MB. Free memory is still 174.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:35:25,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.99 ms. Allocated memory is still 192.9 MB. Free memory was 157.4 MB in the beginning and 176.3 MB in the end (delta: -18.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:25,376 INFO L168 Benchmark]: Boogie Preprocessor took 60.07 ms. Allocated memory is still 192.9 MB. Free memory was 176.3 MB in the beginning and 174.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:25,376 INFO L168 Benchmark]: RCFGBuilder took 474.56 ms. Allocated memory is still 192.9 MB. Free memory was 174.7 MB in the beginning and 160.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:25,377 INFO L168 Benchmark]: TraceAbstraction took 1355.23 ms. Allocated memory is still 192.9 MB. Free memory was 160.6 MB in the beginning and 100.3 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:25,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 192.9 MB. Free memory is still 174.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 338.99 ms. Allocated memory is still 192.9 MB. Free memory was 157.4 MB in the beginning and 176.3 MB in the end (delta: -18.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.07 ms. Allocated memory is still 192.9 MB. Free memory was 176.3 MB in the beginning and 174.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 474.56 ms. Allocated memory is still 192.9 MB. Free memory was 174.7 MB in the beginning and 160.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1355.23 ms. Allocated memory is still 192.9 MB. Free memory was 160.6 MB in the beginning and 100.3 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.8 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, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 989.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 21.7ms, AutomataDifference: 411.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 230.6ms, InitialAbstractionConstructionTime: 23.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 17 SDslu, 34 SDs, 0 SdLazy, 43 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 346.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 43 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 54.1ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 169.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.4ms SsaConstructionTime, 63.1ms SatisfiabilityAnalysisTime, 293.5ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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: 0 <= x && y == x RESULT: Ultimate proved your program to be correct! Received shutdown request...