/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:45:07,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:45:07,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:45:07,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 06:45:07,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 06:45:07,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 06:45:07,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 06:45:07,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 06:45:07,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 06:45:07,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 06:45:07,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 06:45:07,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 06:45:07,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:45:07,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:45:07,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:45:07,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:45:07,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:45:07,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:45:07,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:45:07,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:45:07,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:45:07,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:45:07,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:45:07,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:45:07,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:45:07,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:45:07,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:45:07,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:45:07,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:45:07,785 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:45:07,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:45:07,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:45:07,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:45:07,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:45:07,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:45:07,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:45:07,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:45:07,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:45:07,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:45:07,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:45:07,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:45:07,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:45:07,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:45:07,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:45:07,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:45:07,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:45:07,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:45:07,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:45:07,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:45:07,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:45:07,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:45:07,791 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:45:07,792 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:45:08,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:45:08,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:45:08,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:45:08,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:45:08,107 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:45:08,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2021-04-16 06:45:08,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a121dd04c/07567c7ba4544f9c92330b774ddd3ad1/FLAG73f9281ce [2021-04-16 06:45:08,508 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:45:08,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2021-04-16 06:45:08,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a121dd04c/07567c7ba4544f9c92330b774ddd3ad1/FLAG73f9281ce [2021-04-16 06:45:08,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a121dd04c/07567c7ba4544f9c92330b774ddd3ad1 [2021-04-16 06:45:08,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:45:08,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:45:08,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:45:08,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:45:08,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:45:08,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:45:08" (1/1) ... [2021-04-16 06:45:08,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d19caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:08, skipping insertion in model container [2021-04-16 06:45:08,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:45:08" (1/1) ... [2021-04-16 06:45:08,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:45:08,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:45:09,083 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c[498,511] [2021-04-16 06:45:09,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:45:09,092 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:45:09,101 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c[498,511] [2021-04-16 06:45:09,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:45:09,111 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:45:09,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09 WrapperNode [2021-04-16 06:45:09,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:45:09,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:45:09,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:45:09,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:45:09,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (1/1) ... [2021-04-16 06:45:09,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (1/1) ... [2021-04-16 06:45:09,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (1/1) ... [2021-04-16 06:45:09,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (1/1) ... [2021-04-16 06:45:09,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (1/1) ... [2021-04-16 06:45:09,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (1/1) ... [2021-04-16 06:45:09,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (1/1) ... [2021-04-16 06:45:09,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:45:09,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:45:09,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:45:09,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:45:09,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (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 [2021-04-16 06:45:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:45:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:45:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:45:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:45:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:45:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:45:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:45:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:45:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:45:09,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:45:09,370 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 06:45:09,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:45:09 BoogieIcfgContainer [2021-04-16 06:45:09,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:45:09,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:45:09,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:45:09,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:45:09,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:45:08" (1/3) ... [2021-04-16 06:45:09,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1115fe84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:45:09, skipping insertion in model container [2021-04-16 06:45:09,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:09" (2/3) ... [2021-04-16 06:45:09,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1115fe84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:45:09, skipping insertion in model container [2021-04-16 06:45:09,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:45:09" (3/3) ... [2021-04-16 06:45:09,375 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c40.c [2021-04-16 06:45:09,379 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:45:09,381 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:45:09,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:45:09,403 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:45:09,403 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:45:09,403 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:45:09,403 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:45:09,403 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:45:09,403 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:45:09,403 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:45:09,403 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:45:09,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:45:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 06:45:09,415 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:09,416 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:09,416 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash 486483065, now seen corresponding path program 1 times [2021-04-16 06:45:09,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:09,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759783780] [2021-04-16 06:45:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:09,460 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:09,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:09,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:09,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759783780] [2021-04-16 06:45:09,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:09,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:45:09,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754146098] [2021-04-16 06:45:09,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:45:09,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:09,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:45:09,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:45:09,608 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:09,646 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-04-16 06:45:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:45:09,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 06:45:09,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:09,651 INFO L225 Difference]: With dead ends: 28 [2021-04-16 06:45:09,651 INFO L226 Difference]: Without dead ends: 13 [2021-04-16 06:45:09,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:45:09,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-04-16 06:45:09,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-04-16 06:45:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-04-16 06:45:09,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-04-16 06:45:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:09,675 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-04-16 06:45:09,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-04-16 06:45:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 06:45:09,675 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:09,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:09,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:45:09,676 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1990035655, now seen corresponding path program 1 times [2021-04-16 06:45:09,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:09,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611729525] [2021-04-16 06:45:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:09,679 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:09,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:09,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:09,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:09,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:09,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611729525] [2021-04-16 06:45:09,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:09,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 06:45:09,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030566445] [2021-04-16 06:45:09,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 06:45:09,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:09,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 06:45:09,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:45:09,826 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:09,908 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-04-16 06:45:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:45:09,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 06:45:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:09,910 INFO L225 Difference]: With dead ends: 20 [2021-04-16 06:45:09,910 INFO L226 Difference]: Without dead ends: 15 [2021-04-16 06:45:09,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:45:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-04-16 06:45:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-04-16 06:45:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-04-16 06:45:09,922 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-04-16 06:45:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:09,923 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-04-16 06:45:09,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-04-16 06:45:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 06:45:09,923 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:09,924 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:09,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:45:09,924 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:09,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1622298932, now seen corresponding path program 1 times [2021-04-16 06:45:09,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:09,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138901061] [2021-04-16 06:45:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:09,946 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:45:09,952 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:10,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:45:10,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:45:10,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 06:45:10,042 INFO L142 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-04-16 06:45:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 06:45:10,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:10,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:10,118 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-04-16 06:45:10,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:45:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:10,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138901061] [2021-04-16 06:45:10,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:10,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:45:10,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381917301] [2021-04-16 06:45:10,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:45:10,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:10,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:45:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:45:10,123 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:10,195 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-04-16 06:45:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 06:45:10,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 06:45:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:10,196 INFO L225 Difference]: With dead ends: 15 [2021-04-16 06:45:10,196 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 06:45:10,196 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:45:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 06:45:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 06:45:10,197 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) [2021-04-16 06:45:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 06:45:10,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-04-16 06:45:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:10,197 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 06:45:10,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 06:45:10,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 06:45:10,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:45:10,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 06:45:10,407 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-04-16 06:45:10,408 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-04-16 06:45:10,408 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-04-16 06:45:10,408 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-04-16 06:45:10,408 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#memory_int| |old(#memory_int)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= ~k~0 |old(~k~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#y~0.base| |old(~#y~0.base)|)) [2021-04-16 06:45:10,408 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-04-16 06:45:10,408 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:45:10,408 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-04-16 06:45:10,409 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 06:45:10,409 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:45:10,409 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 10 25) the Hoare annotation is: true [2021-04-16 06:45:10,409 INFO L194 CegarLoopUtils]: At program point L21(lines 21 22) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-04-16 06:45:10,409 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 10 25) the Hoare annotation is: true [2021-04-16 06:45:10,409 INFO L194 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-04-16 06:45:10,409 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 10 25) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2021-04-16 06:45:10,409 INFO L194 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-04-16 06:45:10,410 INFO L194 CegarLoopUtils]: At program point L20(lines 20 22) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-04-16 06:45:10,410 INFO L201 CegarLoopUtils]: At program point L20-1(lines 20 22) the Hoare annotation is: true [2021-04-16 06:45:10,411 INFO L194 CegarLoopUtils]: At program point L14-1(lines 14 17) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= |main_#t~mem8| 0) (= ~i~0 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))))) [2021-04-16 06:45:10,412 INFO L194 CegarLoopUtils]: At program point L14-3(lines 14 17) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-04-16 06:45:10,412 INFO L194 CegarLoopUtils]: At program point L14-4(lines 14 17) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-04-16 06:45:10,418 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:559) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-04-16 06:45:10,421 INFO L168 Benchmark]: Toolchain (without parser) took 1472.44 ms. Allocated memory was 207.6 MB in the beginning and 252.7 MB in the end (delta: 45.1 MB). Free memory was 173.3 MB in the beginning and 210.1 MB in the end (delta: -36.8 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:10,421 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 207.6 MB. Free memory is still 190.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 06:45:10,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.19 ms. Allocated memory is still 207.6 MB. Free memory was 173.0 MB in the beginning and 163.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:10,423 INFO L168 Benchmark]: Boogie Preprocessor took 59.11 ms. Allocated memory is still 207.6 MB. Free memory was 163.4 MB in the beginning and 190.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:10,423 INFO L168 Benchmark]: RCFGBuilder took 199.03 ms. Allocated memory is still 207.6 MB. Free memory was 190.8 MB in the beginning and 176.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:10,424 INFO L168 Benchmark]: TraceAbstraction took 1047.99 ms. Allocated memory was 207.6 MB in the beginning and 252.7 MB in the end (delta: 45.1 MB). Free memory was 176.2 MB in the beginning and 210.1 MB in the end (delta: -33.9 MB). Peak memory consumption was 65.2 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:10,425 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 207.6 MB. Free memory is still 190.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 160.19 ms. Allocated memory is still 207.6 MB. Free memory was 173.0 MB in the beginning and 163.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.11 ms. Allocated memory is still 207.6 MB. Free memory was 163.4 MB in the beginning and 190.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 199.03 ms. Allocated memory is still 207.6 MB. Free memory was 190.8 MB in the beginning and 176.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1047.99 ms. Allocated memory was 207.6 MB in the beginning and 252.7 MB in the end (delta: 45.1 MB). Free memory was 176.2 MB in the beginning and 210.1 MB in the end (delta: -33.9 MB). Peak memory consumption was 65.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: 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 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 796.6ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 7.2ms, AutomataDifference: 212.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 209.3ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 6 SDslu, 13 SDs, 0 SdLazy, 42 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 250.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 27 NumberOfFragments, 262 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 30.0ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 169.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...