/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:57:37,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:57:37,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:57:37,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:57:37,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:57:37,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:57:37,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:57:37,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:57:37,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:57:37,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:57:37,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:57:37,683 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:57:37,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:57:37,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:57:37,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:57:37,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:57:37,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:57:37,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:57:37,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:57:37,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:57:37,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:57:37,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:57:37,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:57:37,685 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:57:37,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:57:37,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:57:37,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:57:37,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:57:37,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:57:37,991 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:57:37,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2021-05-02 23:57:38,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedd57916/de1a2e226e734297b721cdf01583a466/FLAG87daeed8d [2021-05-02 23:57:38,400 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:57:38,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2021-05-02 23:57:38,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedd57916/de1a2e226e734297b721cdf01583a466/FLAG87daeed8d [2021-05-02 23:57:38,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eedd57916/de1a2e226e734297b721cdf01583a466 [2021-05-02 23:57:38,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:57:38,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:57:38,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:57:38,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:57:38,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:57:38,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a85c792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38, skipping insertion in model container [2021-05-02 23:57:38,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:57:38,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:57:38,528 WARN L224 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/Mono5_1.c[311,324] [2021-05-02 23:57:38,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:57:38,543 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:57:38,552 WARN L224 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/Mono5_1.c[311,324] [2021-05-02 23:57:38,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:57:38,568 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:57:38,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38 WrapperNode [2021-05-02 23:57:38,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:57:38,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:57:38,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:57:38,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:57:38,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... [2021-05-02 23:57:38,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:57:38,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:57:38,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:57:38,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:57:38,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:57:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:57:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:57:38,695 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:57:38,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:57:38,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:57:38,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:57:38,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:57:38,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:57:38,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:57:38,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:57:38,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:57:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:57:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:57:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:57:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:57:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:57:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:57:38,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:57:38,920 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:57:38,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:57:38 BoogieIcfgContainer [2021-05-02 23:57:38,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:57:38,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:57:38,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:57:38,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:57:38,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:57:38" (1/3) ... [2021-05-02 23:57:38,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5cc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:57:38, skipping insertion in model container [2021-05-02 23:57:38,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:38" (2/3) ... [2021-05-02 23:57:38,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5cc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:57:38, skipping insertion in model container [2021-05-02 23:57:38,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:57:38" (3/3) ... [2021-05-02 23:57:38,928 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono5_1.c [2021-05-02 23:57:38,932 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:57:38,960 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:57:38,986 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:57:39,018 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:57:39,019 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:57:39,019 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:57:39,019 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:57:39,019 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:57:39,019 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:57:39,019 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:57:39,019 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:57:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:57:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:57:39,036 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:39,036 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:39,037 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1326077006, now seen corresponding path program 1 times [2021-05-02 23:57:39,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:39,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428330375] [2021-05-02 23:57:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:39,117 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:57:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:39,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:39,289 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:39,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428330375] [2021-05-02 23:57:39,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [428330375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:39,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:39,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 23:57:39,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414681790] [2021-05-02 23:57:39,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 23:57:39,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:39,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 23:57:39,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:57:39,309 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 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) [2021-05-02 23:57:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:39,381 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-02 23:57:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:57:39,382 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 [2021-05-02 23:57:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:39,390 INFO L225 Difference]: With dead ends: 31 [2021-05-02 23:57:39,390 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 23:57:39,394 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:57:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 23:57:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 23:57:39,424 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) [2021-05-02 23:57:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-05-02 23:57:39,426 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-05-02 23:57:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:39,427 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-05-02 23:57:39,427 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) [2021-05-02 23:57:39,427 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-05-02 23:57:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:57:39,428 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:39,428 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:39,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:57:39,429 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:39,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1315918275, now seen corresponding path program 1 times [2021-05-02 23:57:39,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:39,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508146591] [2021-05-02 23:57:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:39,442 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:57:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:39,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:39,603 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:39,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508146591] [2021-05-02 23:57:39,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [508146591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:39,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:39,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:57:39,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480879044] [2021-05-02 23:57:39,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:57:39,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:39,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:57:39,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:57:39,607 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2021-05-02 23:57:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:39,778 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 23:57:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:57:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 [2021-05-02 23:57:39,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:39,781 INFO L225 Difference]: With dead ends: 22 [2021-05-02 23:57:39,781 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 23:57:39,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:57:39,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 23:57:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 23:57:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 23:57:39,795 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-02 23:57:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:39,796 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 23:57:39,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2021-05-02 23:57:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 23:57:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 23:57:39,797 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:39,797 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:39,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:57:39,797 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:39,798 INFO L82 PathProgramCache]: Analyzing trace with hash 644646283, now seen corresponding path program 1 times [2021-05-02 23:57:39,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:39,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924086711] [2021-05-02 23:57:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:39,847 INFO L181 rdanLoopAcceleration]: Guard: Formula: (let ((.cse0 (mod v_main_~x~0_9 4294967296))) (and (< .cse0 (mod v_main_~y~0_4 4294967296)) (<= 5000000 .cse0))) InVars {main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_9} OutVars{main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_9} AuxVars[] AssignedVars[] [2021-05-02 23:57:39,868 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.2 percent of original size [2021-05-02 23:57:39,909 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:39,925 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:43,963 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:57:48,137 WARN L205 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 14 [2021-05-02 23:57:52,183 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-02 23:57:52,227 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-02 23:57:53,154 WARN L205 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:57:53,166 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:57:53,271 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.2 percent of original size 101 [2021-05-02 23:57:53,310 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:53,448 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:53,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924086711] [2021-05-02 23:57:53,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1924086711] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:53,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:53,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 23:57:53,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112363561] [2021-05-02 23:57:53,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 23:57:53,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:53,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 23:57:53,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:57:53,451 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:53,589 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-02 23:57:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:57:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2021-05-02 23:57:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:53,591 INFO L225 Difference]: With dead ends: 28 [2021-05-02 23:57:53,591 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 23:57:53,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-02 23:57:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 23:57:53,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-05-02 23:57:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 23:57:53,598 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2021-05-02 23:57:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:53,598 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 23:57:53,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 23:57:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 23:57:53,599 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:53,599 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:53,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 23:57:53,599 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:53,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:53,600 INFO L82 PathProgramCache]: Analyzing trace with hash -244564223, now seen corresponding path program 1 times [2021-05-02 23:57:53,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:53,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720227645] [2021-05-02 23:57:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:53,609 INFO L181 rdanLoopAcceleration]: Guard: Formula: (let ((.cse0 (mod v_main_~x~0_12 4294967296))) (and (< .cse0 5000000) (< .cse0 (mod v_main_~y~0_5 4294967296)))) InVars {main_~x~0=v_main_~x~0_12, main_~y~0=v_main_~y~0_5} OutVars{main_~x~0=v_main_~x~0_12, main_~y~0=v_main_~y~0_5} AuxVars[] AssignedVars[] [2021-05-02 23:57:53,613 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 90.9 percent of original size [2021-05-02 23:57:53,637 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:53,644 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:55,678 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-02 23:57:59,705 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:58:01,757 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:58:01,783 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-02 23:58:01,794 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:58:01,849 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 90.9 percent of original size 90 [2021-05-02 23:58:01,902 INFO L181 rdanLoopAcceleration]: Guard: Formula: (let ((.cse0 (mod v_main_~x~0_14 4294967296))) (and (<= 5000000 .cse0) (< .cse0 (mod v_main_~y~0_6 4294967296)))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_14} OutVars{main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_14} AuxVars[] AssignedVars[] [2021-05-02 23:58:01,906 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.2 percent of original size [2021-05-02 23:58:01,908 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:01,911 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:05,942 WARN L205 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-02 23:58:09,955 WARN L205 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:58:13,998 WARN L205 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 14 [2021-05-02 23:58:14,057 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-02 23:58:14,072 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:58:14,186 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.2 percent of original size 101 [2021-05-02 23:58:14,233 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:58:14,238 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_16 4294967296) 5000000) (< (mod (+ v_main_~x~0_16 1) 4294967296) (mod v_main_~y~0_7 4294967296))) InVars {main_~x~0=v_main_~x~0_16, main_~y~0=v_main_~y~0_7} OutVars{main_~x~0=v_main_~x~0_16, main_~y~0=v_main_~y~0_7} AuxVars[] AssignedVars[] [2021-05-02 23:58:14,249 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 91.4 percent of original size [2021-05-02 23:58:14,251 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:14,257 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:14,815 WARN L205 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:58:14,982 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:58:15,011 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-02 23:58:15,044 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-02 23:58:15,164 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 91.4 percent of original size 96 [2021-05-02 23:58:15,236 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:58:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 23:58:15,268 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 23:58:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 23:58:15,296 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 23:58:15,313 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-02 23:58:15,313 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 23:58:15,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-02 23:58:15,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:58:15 BoogieIcfgContainer [2021-05-02 23:58:15,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:58:15,322 INFO L168 Benchmark]: Toolchain (without parser) took 36901.99 ms. Allocated memory was 188.7 MB in the beginning and 251.7 MB in the end (delta: 62.9 MB). Free memory was 154.7 MB in the beginning and 189.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,322 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:58:15,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.24 ms. Allocated memory is still 188.7 MB. Free memory was 154.5 MB in the beginning and 145.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,323 INFO L168 Benchmark]: Boogie Preprocessor took 57.31 ms. Allocated memory is still 188.7 MB. Free memory was 145.4 MB in the beginning and 172.5 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,323 INFO L168 Benchmark]: RCFGBuilder took 292.39 ms. Allocated memory is still 188.7 MB. Free memory was 172.5 MB in the beginning and 159.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,323 INFO L168 Benchmark]: TraceAbstraction took 36399.10 ms. Allocated memory was 188.7 MB in the beginning and 251.7 MB in the end (delta: 62.9 MB). Free memory was 159.0 MB in the beginning and 189.4 MB in the end (delta: -30.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 148.24 ms. Allocated memory is still 188.7 MB. Free memory was 154.5 MB in the beginning and 145.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.31 ms. Allocated memory is still 188.7 MB. Free memory was 145.4 MB in the beginning and 172.5 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 292.39 ms. Allocated memory is still 188.7 MB. Free memory was 172.5 MB in the beginning and 159.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 36399.10 ms. Allocated memory was 188.7 MB in the beginning and 251.7 MB in the end (delta: 62.9 MB). Free memory was 159.0 MB in the beginning and 189.4 MB in the end (delta: -30.5 MB). Peak memory consumption was 33.5 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: [L6] unsigned int x = 0; [L7] unsigned int y = 10000000; [L8] unsigned int z=5000000; [L9] COND TRUE x=5000000) [L12] x++ [L9] COND TRUE x=5000000 [L11] z-- [L12] x++ [L9] COND FALSE !(x