/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-crafted-1/Mono6_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:28:25,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:28:25,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:28:25,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 07:28:25,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:28:25,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:28:25,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:28:25,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:28:25,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:28:25,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:28:25,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:28:25,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:28:25,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:28:25,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:28:25,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:28:25,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:28:25,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 07:28:25,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:28:25,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:28:25,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:28:25,773 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 07:28:25,788 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:28:25,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:28:25,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:28:25,789 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:28:25,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:28:25,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:28:25,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:28:25,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:28:25,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:28:25,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:28:25,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:28:25,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:28:25,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:28:25,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:28:25,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:28:25,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:28:25,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:28:25,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:28:25,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:28:25,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:28:25,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:28:25,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:28:25,791 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:28:25,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:28:26,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:28:26,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:28:26,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:28:26,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:28:26,086 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:28:26,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono6_1.c [2021-04-16 07:28:26,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806b35ecd/b44760f65fd1488db7943791ed03faa2/FLAGc814d8cb6 [2021-04-16 07:28:26,472 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:28:26,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono6_1.c [2021-04-16 07:28:26,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806b35ecd/b44760f65fd1488db7943791ed03faa2/FLAGc814d8cb6 [2021-04-16 07:28:26,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806b35ecd/b44760f65fd1488db7943791ed03faa2 [2021-04-16 07:28:26,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:28:26,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:28:26,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:28:26,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:28:26,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:28:26,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:28:26" (1/1) ... [2021-04-16 07:28:26,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddf4e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:26, skipping insertion in model container [2021-04-16 07:28:26,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:28:26" (1/1) ... [2021-04-16 07:28:26,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:28:26,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:28:27,015 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-crafted-1/Mono6_1.c[311,324] [2021-04-16 07:28:27,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:28:27,026 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:28:27,033 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-crafted-1/Mono6_1.c[311,324] [2021-04-16 07:28:27,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:28:27,044 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:28:27,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27 WrapperNode [2021-04-16 07:28:27,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:28:27,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:28:27,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:28:27,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:28:27,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (1/1) ... [2021-04-16 07:28:27,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (1/1) ... [2021-04-16 07:28:27,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (1/1) ... [2021-04-16 07:28:27,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (1/1) ... [2021-04-16 07:28:27,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (1/1) ... [2021-04-16 07:28:27,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (1/1) ... [2021-04-16 07:28:27,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (1/1) ... [2021-04-16 07:28:27,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:28:27,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:28:27,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:28:27,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:28:27,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (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 07:28:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:28:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:28:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:28:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 07:28:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:28:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 07:28:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:28:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:28:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:28:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:28:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:28:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:28:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:28:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:28:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:28:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:28:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:28:27,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:28:27,452 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 07:28:27,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:28:27 BoogieIcfgContainer [2021-04-16 07:28:27,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:28:27,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:28:27,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:28:27,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:28:27,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:28:26" (1/3) ... [2021-04-16 07:28:27,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c744b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:28:27, skipping insertion in model container [2021-04-16 07:28:27,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:28:27" (2/3) ... [2021-04-16 07:28:27,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c744b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:28:27, skipping insertion in model container [2021-04-16 07:28:27,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:28:27" (3/3) ... [2021-04-16 07:28:27,477 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono6_1.c [2021-04-16 07:28:27,483 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:28:27,486 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:28:27,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:28:27,535 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:28:27,535 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:28:27,535 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:28:27,535 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:28:27,535 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:28:27,535 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:28:27,535 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:28:27,535 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:28:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 07:28:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 07:28:27,567 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:28:27,569 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:28:27,569 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:28:27,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:28:27,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 1 times [2021-04-16 07:28:27,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:28:27,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792691603] [2021-04-16 07:28:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:28:27,641 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:28:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:28:27,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:27,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:28:27,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:27,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:28:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:28:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:28:27,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:27,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:28:27,854 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 07:28:27,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792691603] [2021-04-16 07:28:27,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:28:27,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 07:28:27,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062834423] [2021-04-16 07:28:27,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 07:28:27,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:28:27,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 07:28:27,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 07:28:27,876 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:28:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:28:27,948 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-04-16 07:28:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 07:28:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 07:28:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:28:27,955 INFO L225 Difference]: With dead ends: 33 [2021-04-16 07:28:27,956 INFO L226 Difference]: Without dead ends: 14 [2021-04-16 07:28:27,959 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 07:28:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-04-16 07:28:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-04-16 07:28:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:28:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-04-16 07:28:27,991 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-04-16 07:28:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:28:27,992 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-04-16 07:28:27,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:28:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-04-16 07:28:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 07:28:27,993 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:28:27,993 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:28:27,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:28:27,993 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:28:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:28:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 1 times [2021-04-16 07:28:27,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:28:27,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906592821] [2021-04-16 07:28:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:28:27,997 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:28:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:28:28,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:28:28,067 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-04-16 07:28:28,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 07:28:28,100 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 07:28:28,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:28:28,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:28:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:28:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:28:28,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:28:28,164 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 07:28:28,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906592821] [2021-04-16 07:28:28,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:28:28,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 07:28:28,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410158975] [2021-04-16 07:28:28,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 07:28:28,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:28:28,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 07:28:28,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 07:28:28,167 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:28:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:28:28,229 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-04-16 07:28:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 07:28:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 07:28:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:28:28,231 INFO L225 Difference]: With dead ends: 25 [2021-04-16 07:28:28,231 INFO L226 Difference]: Without dead ends: 17 [2021-04-16 07:28:28,232 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 07:28:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-04-16 07:28:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-04-16 07:28:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:28:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-04-16 07:28:28,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-04-16 07:28:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:28:28,238 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-04-16 07:28:28,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:28:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-04-16 07:28:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:28:28,239 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:28:28,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:28:28,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 07:28:28,249 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:28:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:28:28,250 INFO L82 PathProgramCache]: Analyzing trace with hash -79339060, now seen corresponding path program 1 times [2021-04-16 07:28:28,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:28:28,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972362315] [2021-04-16 07:28:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:28:28,282 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-04-16 07:28:28,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:28:28,295 INFO L175 rdanLoopAcceleration]: Guard: Formula: (let ((.cse0 (mod v_main_~x~0_11 4294967296))) (and (< .cse0 5000000) (< .cse0 (mod v_main_~y~0_4 4294967296)))) InVars {main_~x~0=v_main_~x~0_11, main_~y~0=v_main_~y~0_4} OutVars{main_~x~0=v_main_~x~0_11, main_~y~0=v_main_~y~0_4} AuxVars[] AssignedVars[] [2021-04-16 07:28:28,321 WARN L240 tifierPushTermWalker]: treesize reduction 12, result has 88.2 percent of original size [2021-04-16 07:28:28,340 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,346 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,351 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,357 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,361 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,369 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,383 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 07:28:28,391 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:28,394 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:32,449 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 16 [2021-04-16 07:28:32,450 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:36,473 WARN L205 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-04-16 07:28:36,474 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:28:40,485 WARN L205 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-04-16 07:28:40,485 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-04-16 07:28:40,494 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:28:40,499 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,504 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-04-16 07:28:40,505 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-16 07:28:40,511 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,515 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,516 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-04-16 07:28:40,520 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 07:28:40,524 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,531 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,539 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,547 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,552 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,557 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,563 WARN L245 tifierPushTermWalker]: treesize reduction 12, result has 88.2 percent of original size 102 [2021-04-16 07:28:40,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:28:40,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-04-16 07:28:40,611 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:28:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 07:28:40,638 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 07:28:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 07:28:40,660 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 07:28:40,672 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-04-16 07:28:40,673 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 07:28:40,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 07:28:40,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 07:28:40 BoogieIcfgContainer [2021-04-16 07:28:40,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 07:28:40,683 INFO L168 Benchmark]: Toolchain (without parser) took 13766.91 ms. Allocated memory is still 182.5 MB. Free memory was 147.9 MB in the beginning and 70.3 MB in the end (delta: 77.6 MB). Peak memory consumption was 77.1 MB. Max. memory is 8.0 GB. [2021-04-16 07:28:40,684 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 182.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 07:28:40,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.01 ms. Allocated memory is still 182.5 MB. Free memory was 147.7 MB in the beginning and 138.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-04-16 07:28:40,684 INFO L168 Benchmark]: Boogie Preprocessor took 62.94 ms. Allocated memory is still 182.5 MB. Free memory was 138.5 MB in the beginning and 165.7 MB in the end (delta: -27.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-04-16 07:28:40,685 INFO L168 Benchmark]: RCFGBuilder took 344.44 ms. Allocated memory is still 182.5 MB. Free memory was 165.7 MB in the beginning and 152.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-04-16 07:28:40,685 INFO L168 Benchmark]: TraceAbstraction took 13227.41 ms. Allocated memory is still 182.5 MB. Free memory was 151.6 MB in the beginning and 70.3 MB in the end (delta: 81.3 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. [2021-04-16 07:28:40,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 182.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 126.01 ms. Allocated memory is still 182.5 MB. Free memory was 147.7 MB in the beginning and 138.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.94 ms. Allocated memory is still 182.5 MB. Free memory was 138.5 MB in the beginning and 165.7 MB in the end (delta: -27.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 344.44 ms. Allocated memory is still 182.5 MB. Free memory was 165.7 MB in the beginning and 152.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13227.41 ms. Allocated memory is still 182.5 MB. Free memory was 151.6 MB in the beginning and 70.3 MB in the end (delta: 81.3 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] unsigned int x = 0; [L8] unsigned int y = 10000000; [L9] unsigned int z=5000000; [L10] COND TRUE x=5000000) [L13] x++ [L10] COND FALSE !(x