/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/nla-digbench-scaling/dijkstra-u_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 14:13:30,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 14:13:30,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 14:13:30,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 14:13:30,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 14:13:30,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 14:13:30,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 14:13:30,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 14:13:30,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 14:13:30,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 14:13:30,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 14:13:30,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 14:13:30,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 14:13:30,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 14:13:30,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 14:13:30,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 14:13:30,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 14:13:30,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 14:13:30,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 14:13:30,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 14:13:30,484 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 14:13:30,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 14:13:30,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 14:13:30,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 14:13:30,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 14:13:30,514 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 14:13:30,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 14:13:30,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 14:13:30,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 14:13:30,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 14:13:30,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 14:13:30,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 14:13:30,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 14:13:30,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 14:13:30,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 14:13:30,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 14:13:30,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 14:13:30,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 14:13:30,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 14:13:30,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 14:13:30,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 14:13:30,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 14:13:30,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 14:13:30,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 14:13:30,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 14:13:30,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 14:13:30,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 14:13:30,797 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 14:13:30,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2021-05-02 14:13:30,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a51f438d/fb4cece99e984f15890b667f1b523292/FLAG2d43c2554 [2021-05-02 14:13:31,132 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 14:13:31,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2021-05-02 14:13:31,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a51f438d/fb4cece99e984f15890b667f1b523292/FLAG2d43c2554 [2021-05-02 14:13:31,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a51f438d/fb4cece99e984f15890b667f1b523292 [2021-05-02 14:13:31,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 14:13:31,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 14:13:31,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 14:13:31,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 14:13:31,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 14:13:31,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ceeabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31, skipping insertion in model container [2021-05-02 14:13:31,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 14:13:31,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 14:13:31,675 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound1.c[533,546] [2021-05-02 14:13:31,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:13:31,696 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 14:13:31,704 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound1.c[533,546] [2021-05-02 14:13:31,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:13:31,728 INFO L208 MainTranslator]: Completed translation [2021-05-02 14:13:31,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31 WrapperNode [2021-05-02 14:13:31,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 14:13:31,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 14:13:31,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 14:13:31,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 14:13:31,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (1/1) ... [2021-05-02 14:13:31,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 14:13:31,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 14:13:31,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 14:13:31,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 14:13:31,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (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 14:13:31,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 14:13:31,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 14:13:31,842 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 14:13:31,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 14:13:31,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 14:13:31,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 14:13:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 14:13:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 14:13:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 14:13:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 14:13:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 14:13:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 14:13:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 14:13:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 14:13:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 14:13:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 14:13:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 14:13:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 14:13:31,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 14:13:31,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 14:13:32,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 14:13:32,101 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 14:13:32,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:13:32 BoogieIcfgContainer [2021-05-02 14:13:32,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 14:13:32,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 14:13:32,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 14:13:32,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 14:13:32,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 02:13:31" (1/3) ... [2021-05-02 14:13:32,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105ecb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:13:32, skipping insertion in model container [2021-05-02 14:13:32,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:13:31" (2/3) ... [2021-05-02 14:13:32,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105ecb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:13:32, skipping insertion in model container [2021-05-02 14:13:32,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:13:32" (3/3) ... [2021-05-02 14:13:32,107 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound1.c [2021-05-02 14:13:32,110 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 14:13:32,113 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 14:13:32,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 14:13:32,138 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 14:13:32,138 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 14:13:32,138 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 14:13:32,138 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 14:13:32,138 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 14:13:32,138 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 14:13:32,138 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 14:13:32,138 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 14:13:32,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 14:13:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 14:13:32,152 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:32,152 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:13:32,153 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:32,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2024343623, now seen corresponding path program 1 times [2021-05-02 14:13:32,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:32,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070679502] [2021-05-02 14:13:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:13:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 14:13:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:32,295 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 14:13:32,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:32,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070679502] [2021-05-02 14:13:32,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070679502] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:13:32,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:13:32,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:13:32,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060631481] [2021-05-02 14:13:32,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:13:32,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:13:32,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:13:32,308 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 14:13:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:36,740 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2021-05-02 14:13:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:13:36,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 14:13:36,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:36,746 INFO L225 Difference]: With dead ends: 70 [2021-05-02 14:13:36,746 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 14:13:36,748 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:13:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 14:13:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-02 14:13:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 14:13:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2021-05-02 14:13:36,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 18 [2021-05-02 14:13:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:36,815 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2021-05-02 14:13:36,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 14:13:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2021-05-02 14:13:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 14:13:36,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:36,816 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:13:36,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 14:13:36,816 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash -96361696, now seen corresponding path program 1 times [2021-05-02 14:13:36,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:36,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472378937] [2021-05-02 14:13:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:36,846 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:13:36,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408397426] [2021-05-02 14:13:36,846 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 14:13:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:36,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 14:13:36,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:13:37,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:37,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:37,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:37,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:37,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:37,134 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 14:13:37,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:37,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472378937] [2021-05-02 14:13:37,135 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:13:37,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408397426] [2021-05-02 14:13:37,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408397426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:13:37,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:13:37,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 14:13:37,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381683939] [2021-05-02 14:13:37,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 14:13:37,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:37,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 14:13:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 14:13:37,137 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:13:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:37,166 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2021-05-02 14:13:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 14:13:37,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 14:13:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:37,167 INFO L225 Difference]: With dead ends: 55 [2021-05-02 14:13:37,167 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 14:13:37,168 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 14:13:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 14:13:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 14:13:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 14:13:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2021-05-02 14:13:37,175 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 20 [2021-05-02 14:13:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:37,175 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2021-05-02 14:13:37,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:13:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2021-05-02 14:13:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 14:13:37,176 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:37,176 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:13:37,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 14:13:37,400 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:37,401 INFO L82 PathProgramCache]: Analyzing trace with hash 962099791, now seen corresponding path program 1 times [2021-05-02 14:13:37,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:37,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262162223] [2021-05-02 14:13:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:37,431 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:13:37,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410919661] [2021-05-02 14:13:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-02 14:13:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:37,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 14:13:37,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:13:37,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:37,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:37,667 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 14:13:37,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:37,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262162223] [2021-05-02 14:13:37,667 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:13:37,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410919661] [2021-05-02 14:13:37,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410919661] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:13:37,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:13:37,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 14:13:37,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659466695] [2021-05-02 14:13:37,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 14:13:37,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 14:13:37,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 14:13:37,669 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 14:13:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:42,241 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2021-05-02 14:13:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 14:13:42,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-05-02 14:13:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:42,266 INFO L225 Difference]: With dead ends: 54 [2021-05-02 14:13:42,266 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 14:13:42,266 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:13:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 14:13:42,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-02 14:13:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 14:13:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2021-05-02 14:13:42,280 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 21 [2021-05-02 14:13:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:42,280 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2021-05-02 14:13:42,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 14:13:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2021-05-02 14:13:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 14:13:42,281 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:42,281 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:13:42,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:13:42,490 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:42,491 INFO L82 PathProgramCache]: Analyzing trace with hash 963589341, now seen corresponding path program 1 times [2021-05-02 14:13:42,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:42,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438282165] [2021-05-02 14:13:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:13:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 14:13:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:42,638 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 14:13:42,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:42,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438282165] [2021-05-02 14:13:42,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438282165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:13:42,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:13:42,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 14:13:42,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578936425] [2021-05-02 14:13:42,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 14:13:42,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:42,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 14:13:42,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:13:42,640 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:13:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:42,812 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2021-05-02 14:13:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 14:13:42,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-05-02 14:13:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:42,814 INFO L225 Difference]: With dead ends: 63 [2021-05-02 14:13:42,814 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 14:13:42,818 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:13:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 14:13:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 14:13:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 14:13:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-05-02 14:13:42,827 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 21 [2021-05-02 14:13:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:42,828 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-05-02 14:13:42,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:13:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-05-02 14:13:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 14:13:42,828 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:13:42,829 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:13:42,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 14:13:42,829 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:13:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:13:42,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1439696200, now seen corresponding path program 1 times [2021-05-02 14:13:42,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:13:42,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054230590] [2021-05-02 14:13:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:13:42,845 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:13:42,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644759020] [2021-05-02 14:13:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:13:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:13:42,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 14:13:42,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:13:42,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:42,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:42,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:13:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 14:13:43,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:13:43,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054230590] [2021-05-02 14:13:43,017 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:13:43,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644759020] [2021-05-02 14:13:43,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644759020] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:13:43,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:13:43,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 14:13:43,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367054843] [2021-05-02 14:13:43,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 14:13:43,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:13:43,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 14:13:43,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 14:13:43,021 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 14:13:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:13:43,251 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-05-02 14:13:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 14:13:43,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2021-05-02 14:13:43,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:13:43,252 INFO L225 Difference]: With dead ends: 29 [2021-05-02 14:13:43,252 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 14:13:43,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:13:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 14:13:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 14:13:43,252 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 14:13:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 14:13:43,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-05-02 14:13:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:13:43,253 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 14:13:43,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 14:13:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 14:13:43,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 14:13:43,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:13:43,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 14:13:43,796 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~counter~0 |old(~counter~0)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (= ~counter~0 0) [2021-05-02 14:13:43,797 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-02 14:13:43,797 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 20 61) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point L44(lines 38 56) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L194 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: (not (= |old(~counter~0)| 0)) [2021-05-02 14:13:43,798 INFO L194 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: (or (and (= main_~n~0 main_~r~0) (< (mod main_~n~0 4294967296) 1073741823) (<= 1 ~counter~0) (= main_~h~0 0) (= main_~p~0 0)) (not (= |old(~counter~0)| 0))) [2021-05-02 14:13:43,798 INFO L194 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (= |old(~counter~0)| 0))) [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L194 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (not (= |old(~counter~0)| 0)) [2021-05-02 14:13:43,798 INFO L194 CegarLoopUtils]: At program point L58(line 58) the Hoare annotation is: (or (and (< (mod main_~n~0 4294967296) 1073741823) (= main_~h~0 0) (= main_~p~0 0)) (not (= |old(~counter~0)| 0))) [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 20 61) no Hoare annotation was computed. [2021-05-02 14:13:43,798 INFO L194 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (not (= |old(~counter~0)| 0)) [2021-05-02 14:13:43,798 INFO L198 CegarLoopUtils]: For program point L38(lines 38 56) no Hoare annotation was computed. [2021-05-02 14:13:43,799 INFO L194 CegarLoopUtils]: At program point L38-2(lines 38 56) the Hoare annotation is: (or (and (= main_~n~0 main_~r~0) (< (mod main_~n~0 4294967296) 1073741823) (<= 1 ~counter~0) (= main_~h~0 0) (= main_~p~0 0)) (not (= |old(~counter~0)| 0))) [2021-05-02 14:13:43,799 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 20 61) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (= |old(~counter~0)| 0))) [2021-05-02 14:13:43,799 INFO L198 CegarLoopUtils]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2021-05-02 14:13:43,799 INFO L194 CegarLoopUtils]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= main_~n~0 main_~r~0)) (.cse1 (< (mod main_~n~0 4294967296) 1073741823)) (.cse2 (= main_~h~0 0)) (.cse3 (= main_~p~0 0))) (or (and .cse0 .cse1 (<= 1 ~counter~0) .cse2 .cse3) (not (= |old(~counter~0)| 0)) (and .cse0 .cse1 .cse2 .cse3 (= ~counter~0 |old(~counter~0)|)))) [2021-05-02 14:13:43,799 INFO L198 CegarLoopUtils]: For program point L59(line 59) no Hoare annotation was computed. [2021-05-02 14:13:43,799 INFO L194 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (not (= |old(~counter~0)| 0)) [2021-05-02 14:13:43,799 INFO L194 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (not (= |old(~counter~0)| 0)) [2021-05-02 14:13:43,799 INFO L194 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: (not (= |old(~counter~0)| 0)) [2021-05-02 14:13:43,799 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-02 14:13:43,799 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-02 14:13:43,799 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-02 14:13:43,799 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-02 14:13:43,799 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-02 14:13:43,799 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-02 14:13:43,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 02:13:43 BoogieIcfgContainer [2021-05-02 14:13:43,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 14:13:43,810 INFO L168 Benchmark]: Toolchain (without parser) took 12236.76 ms. Allocated memory was 178.3 MB in the beginning and 226.5 MB in the end (delta: 48.2 MB). Free memory was 143.7 MB in the beginning and 202.5 MB in the end (delta: -58.7 MB). Peak memory consumption was 114.4 MB. Max. memory is 8.0 GB. [2021-05-02 14:13:43,810 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 178.3 MB. Free memory is still 160.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 14:13:43,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.27 ms. Allocated memory is still 178.3 MB. Free memory was 143.5 MB in the beginning and 132.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 14:13:43,811 INFO L168 Benchmark]: Boogie Preprocessor took 44.93 ms. Allocated memory is still 178.3 MB. Free memory was 132.7 MB in the beginning and 161.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-02 14:13:43,811 INFO L168 Benchmark]: RCFGBuilder took 327.26 ms. Allocated memory is still 178.3 MB. Free memory was 161.8 MB in the beginning and 144.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 14:13:43,811 INFO L168 Benchmark]: TraceAbstraction took 11707.06 ms. Allocated memory was 178.3 MB in the beginning and 226.5 MB in the end (delta: 48.2 MB). Free memory was 144.0 MB in the beginning and 202.5 MB in the end (delta: -58.5 MB). Peak memory consumption was 114.4 MB. Max. memory is 8.0 GB. [2021-05-02 14:13:43,812 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 178.3 MB. Free memory is still 160.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 152.27 ms. Allocated memory is still 178.3 MB. Free memory was 143.5 MB in the beginning and 132.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.93 ms. Allocated memory is still 178.3 MB. Free memory was 132.7 MB in the beginning and 161.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 327.26 ms. Allocated memory is still 178.3 MB. Free memory was 161.8 MB in the beginning and 144.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11707.06 ms. Allocated memory was 178.3 MB in the beginning and 226.5 MB in the end (delta: 48.2 MB). Free memory was 144.0 MB in the beginning and 202.5 MB in the end (delta: -58.5 MB). Peak memory consumption was 114.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11317.7ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 7.6ms, AutomataDifference: 9487.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 342.1ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 175 SDtfs, 74 SDslu, 363 SDs, 0 SdLazy, 231 SolverSat, 34 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8805.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 277.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 58.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 17 LocationsWithAnnotation, 54 PreInvPairs, 59 NumberOfFragments, 184 HoareAnnotationTreeSize, 54 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 50.7ms HoareSimplificationTime, 17 FomulaSimplificationsInter, 307 FormulaSimplificationTreeSizeReductionInter, 279.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 116.7ms SsaConstructionTime, 160.1ms SatisfiabilityAnalysisTime, 567.8ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 394 SizeOfPredicates, 5 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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: 30]: Loop Invariant Derived loop invariant: (((((n == r && n % 4294967296 < 1073741823) && 1 <= counter) && h == 0) && p == 0) || !(\old(counter) == 0)) || ((((n == r && n % 4294967296 < 1073741823) && h == 0) && p == 0) && counter == \old(counter)) RESULT: Ultimate proved your program to be correct! Received shutdown request...