/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/Mono6_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:57:50,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:57:50,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:57:50,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:57:50,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:57:50,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:57:50,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:57:50,315 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 23:57:50,335 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:57:50,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:57:50,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:57:50,339 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:57:50,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:57:50,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:57:50,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:57:50,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:57:50,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:57:50,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:57:50,341 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:57:50,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:57:50,341 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:57:50,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:57:50,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:57:50,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:57:50,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:57:50,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:57:50,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:57:50,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:57:50,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:57:50,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:57:50,343 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:57:50,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:57:50,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:57:50,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:57:50,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:57:50,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:57:50,767 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:57:50,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono6_1.c [2021-05-02 23:57:50,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df16093f1/80224eed261e4010aea0646c03ac3b5d/FLAGa081dd642 [2021-05-02 23:57:51,346 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:57:51,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono6_1.c [2021-05-02 23:57:51,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df16093f1/80224eed261e4010aea0646c03ac3b5d/FLAGa081dd642 [2021-05-02 23:57:51,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df16093f1/80224eed261e4010aea0646c03ac3b5d [2021-05-02 23:57:51,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:57:51,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:57:51,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:57:51,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:57:51,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:57:51,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:51,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fae51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51, skipping insertion in model container [2021-05-02 23:57:51,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:51,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:57:51,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:57:51,930 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/Mono6_1.c[311,324] [2021-05-02 23:57:51,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:57:51,950 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:57:51,961 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/Mono6_1.c[311,324] [2021-05-02 23:57:51,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:57:51,983 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:57:51,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51 WrapperNode [2021-05-02 23:57:51,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:57:51,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:57:51,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:57:51,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:57:51,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:51,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:52,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:52,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:52,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:52,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:52,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (1/1) ... [2021-05-02 23:57:52,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:57:52,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:57:52,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:57:52,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:57:52,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (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 23:57:52,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:57:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:57:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:57:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:57:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:57:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:57:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:57:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:57:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:57:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:57:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:57:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:57:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:57:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:57:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:57:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:57:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:57:52,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:57:52,389 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:57:52,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:57:52 BoogieIcfgContainer [2021-05-02 23:57:52,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:57:52,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:57:52,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:57:52,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:57:52,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:57:51" (1/3) ... [2021-05-02 23:57:52,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abc96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:57:52, skipping insertion in model container [2021-05-02 23:57:52,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:51" (2/3) ... [2021-05-02 23:57:52,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abc96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:57:52, skipping insertion in model container [2021-05-02 23:57:52,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:57:52" (3/3) ... [2021-05-02 23:57:52,398 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono6_1.c [2021-05-02 23:57:52,404 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:57:52,407 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:57:52,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:57:52,445 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:57:52,445 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:57:52,445 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:57:52,445 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:57:52,446 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:57:52,446 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:57:52,446 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:57:52,446 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:57:52,459 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) [2021-05-02 23:57:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:57:52,466 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:52,466 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:52,467 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 1 times [2021-05-02 23:57:52,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:52,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758581739] [2021-05-02 23:57:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:52,584 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:57:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:52,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:52,808 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 23:57:52,810 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:52,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758581739] [2021-05-02 23:57:52,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [758581739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:52,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:52,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 23:57:52,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646145814] [2021-05-02 23:57:52,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 23:57:52,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:52,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 23:57:52,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:57:52,835 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) [2021-05-02 23:57:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:52,919 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-05-02 23:57:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:57:52,922 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 23:57:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:52,932 INFO L225 Difference]: With dead ends: 33 [2021-05-02 23:57:52,932 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 23:57:52,936 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:57:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 23:57:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 23:57:52,991 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 23:57:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-05-02 23:57:52,994 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-05-02 23:57:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:52,994 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-05-02 23:57:52,995 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 23:57:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-05-02 23:57:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:57:52,997 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:52,997 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:52,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:57:52,997 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:52,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:52,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 1 times [2021-05-02 23:57:52,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:52,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012779159] [2021-05-02 23:57:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:53,012 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:57:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:53,233 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 23:57:53,233 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:53,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012779159] [2021-05-02 23:57:53,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2012779159] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:53,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:53,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:57:53,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583512308] [2021-05-02 23:57:53,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:57:53,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:53,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:57:53,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:57:53,239 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) [2021-05-02 23:57:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:53,336 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-05-02 23:57:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:57:53,337 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 [2021-05-02 23:57:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:53,338 INFO L225 Difference]: With dead ends: 25 [2021-05-02 23:57:53,338 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 23:57:53,340 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:57:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 23:57:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-02 23:57:53,355 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) [2021-05-02 23:57:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-05-02 23:57:53,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-05-02 23:57:53,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:53,357 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-05-02 23:57:53,358 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) [2021-05-02 23:57:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-05-02 23:57:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 23:57:53,360 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:53,360 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:53,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:57:53,361 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash -79339060, now seen corresponding path program 1 times [2021-05-02 23:57:53,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:53,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108515759] [2021-05-02 23:57:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:53,403 INFO L181 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[] [2021-05-02 23:57:53,424 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 90.9 percent of original size [2021-05-02 23:57:53,462 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:53,484 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,528 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 16 [2021-05-02 23:58:01,585 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:58:05,612 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-02 23:58:05,641 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-02 23:58:05,656 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:58:05,749 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 90.9 percent of original size 90 [2021-05-02 23:58:05,825 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:06,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:58:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:06,040 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 23:58:06,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:58:06,239 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:58:06,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108515759] [2021-05-02 23:58:06,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2108515759] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:58:06,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:58:06,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 23:58:06,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082199353] [2021-05-02 23:58:06,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 23:58:06,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:58:06,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 23:58:06,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:58:06,247 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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 23:58:06,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:58:06,774 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-05-02 23:58:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 23:58:06,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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 23:58:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:58:06,777 INFO L225 Difference]: With dead ends: 25 [2021-05-02 23:58:06,777 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 23:58:06,779 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 608.7ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-05-02 23:58:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 23:58:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-05-02 23:58:06,786 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 23:58:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 23:58:06,787 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2021-05-02 23:58:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:58:06,787 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 23:58:06,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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 23:58:06,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 23:58:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 23:58:06,787 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:58:06,787 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:58:06,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 23:58:06,788 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:58:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:58:06,788 INFO L82 PathProgramCache]: Analyzing trace with hash 309814626, now seen corresponding path program 1 times [2021-05-02 23:58:06,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:58:06,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880542389] [2021-05-02 23:58:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:58:06,810 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_15 1) 4294967296) (mod v_main_~y~0_5 4294967296)) (< (mod v_main_~x~0_15 4294967296) 5000000)) InVars {main_~x~0=v_main_~x~0_15, main_~y~0=v_main_~y~0_5} OutVars{main_~x~0=v_main_~x~0_15, main_~y~0=v_main_~y~0_5} AuxVars[] AssignedVars[] [2021-05-02 23:58:06,826 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 91.4 percent of original size [2021-05-02 23:58:06,834 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:06,846 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:07,500 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-02 23:58:07,579 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-02 23:58:07,657 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-02 23:58:07,803 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 91.4 percent of original size 96 [2021-05-02 23:58:07,946 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-02 23:58:07,952 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:07,956 INFO L181 rdanLoopAcceleration]: Guard: Formula: (let ((.cse0 (mod v_main_~x~0_17 4294967296))) (and (< .cse0 5000000) (< .cse0 (mod v_main_~y~0_6 4294967296)))) InVars {main_~x~0=v_main_~x~0_17, main_~y~0=v_main_~y~0_6} OutVars{main_~x~0=v_main_~x~0_17, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[] [2021-05-02 23:58:07,963 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 90.9 percent of original size [2021-05-02 23:58:07,966 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:07,971 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:08,108 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-02 23:58:08,118 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:58:08,196 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 90.9 percent of original size 90 [2021-05-02 23:58:08,255 INFO L181 rdanLoopAcceleration]: Guard: Formula: (let ((.cse0 (mod v_main_~x~0_19 4294967296))) (and (< .cse0 (mod v_main_~y~0_7 4294967296)) (<= 5000000 .cse0))) InVars {main_~y~0=v_main_~y~0_7, main_~x~0=v_main_~x~0_19} OutVars{main_~y~0=v_main_~y~0_7, main_~x~0=v_main_~x~0_19} AuxVars[] AssignedVars[] [2021-05-02 23:58:08,261 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 91.8 percent of original size [2021-05-02 23:58:08,296 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:08,301 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:12,324 WARN L205 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-02 23:58:15,522 WARN L205 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:58:15,556 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-02 23:58:15,573 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:58:15,634 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 91.8 percent of original size 101 [2021-05-02 23:58:15,671 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-02 23:58:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 23:58:15,707 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 23:58:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 23:58:15,741 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 23:58:15,759 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-02 23:58:15,759 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 23:58:15,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-02 23:58:15,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:58:15 BoogieIcfgContainer [2021-05-02 23:58:15,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:58:15,772 INFO L168 Benchmark]: Toolchain (without parser) took 24048.54 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 142.0 MB in the beginning and 139.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,772 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 177.2 MB. Free memory is still 158.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:58:15,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.70 ms. Allocated memory is still 177.2 MB. Free memory was 141.7 MB in the beginning and 160.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,773 INFO L168 Benchmark]: Boogie Preprocessor took 58.70 ms. Allocated memory is still 177.2 MB. Free memory was 160.8 MB in the beginning and 159.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,773 INFO L168 Benchmark]: RCFGBuilder took 346.46 ms. Allocated memory is still 177.2 MB. Free memory was 159.0 MB in the beginning and 146.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,774 INFO L168 Benchmark]: TraceAbstraction took 23379.21 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 145.8 MB in the beginning and 139.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2021-05-02 23:58:15,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 177.2 MB. Free memory is still 158.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.70 ms. Allocated memory is still 177.2 MB. Free memory was 141.7 MB in the beginning and 160.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.70 ms. Allocated memory is still 177.2 MB. Free memory was 160.8 MB in the beginning and 159.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 346.46 ms. Allocated memory is still 177.2 MB. Free memory was 159.0 MB in the beginning and 146.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23379.21 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 145.8 MB in the beginning and 139.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 43.0 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 TRUE x=5000000 [L12] z++ [L13] x++ [L10] COND FALSE !(x