/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-6253b08 [2021-05-06 11:42:19,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:42:19,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:42:19,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:42:19,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:42:19,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:42:19,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:42:19,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:42:19,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:42:19,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:42:19,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:42:19,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:42:19,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:42:19,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:42:19,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:42:19,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:42:19,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:42:19,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:42:19,998 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:42:19,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:42:19,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:42:19,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:42:20,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:42:20,000 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:42:20,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:42:20,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:42:20,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:42:20,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:42:20,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:42:20,284 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:42:20,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono6_1.c [2021-05-06 11:42:20,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a504debe3/463cb41ab7a6480a96e33606786a7054/FLAG9c6dcdea8 [2021-05-06 11:42:20,838 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:42:20,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono6_1.c [2021-05-06 11:42:20,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a504debe3/463cb41ab7a6480a96e33606786a7054/FLAG9c6dcdea8 [2021-05-06 11:42:21,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a504debe3/463cb41ab7a6480a96e33606786a7054 [2021-05-06 11:42:21,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:42:21,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:42:21,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:42:21,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:42:21,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:42:21,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ce7bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21, skipping insertion in model container [2021-05-06 11:42:21,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:42:21,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:42:21,429 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] [2021-05-06 11:42:21,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:42:21,439 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:42:21,446 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] [2021-05-06 11:42:21,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:42:21,462 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:42:21,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21 WrapperNode [2021-05-06 11:42:21,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:42:21,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:42:21,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:42:21,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:42:21,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (1/1) ... [2021-05-06 11:42:21,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:42:21,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:42:21,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:42:21,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:42:21,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (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 [2021-05-06 11:42:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:42:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:42:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:42:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:42:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:42:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:42:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:42:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:42:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:42:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:42:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:42:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:42:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:42:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:42:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:42:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:42:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:42:21,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:42:21,764 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:42:21,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:42:21 BoogieIcfgContainer [2021-05-06 11:42:21,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:42:21,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:42:21,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:42:21,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:42:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:42:21" (1/3) ... [2021-05-06 11:42:21,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:42:21, skipping insertion in model container [2021-05-06 11:42:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:42:21" (2/3) ... [2021-05-06 11:42:21,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:42:21, skipping insertion in model container [2021-05-06 11:42:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:42:21" (3/3) ... [2021-05-06 11:42:21,769 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono6_1.c [2021-05-06 11:42:21,773 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:42:21,775 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:42:21,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:42:21,799 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:42:21,799 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:42:21,799 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:42:21,799 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:42:21,799 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:42:21,799 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:42:21,799 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:42:21,799 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:42:21,807 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) [2021-05-06 11:42:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:42:21,811 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:21,811 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:21,812 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:21,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:21,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 1 times [2021-05-06 11:42:21,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:21,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041144457] [2021-05-06 11:42:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:21,860 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:21,993 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:21,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041144457] [2021-05-06 11:42:21,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041144457] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:21,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:21,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:42:21,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462043355] [2021-05-06 11:42:21,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:42:21,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:22,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:42:22,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:42:22,006 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) [2021-05-06 11:42:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:22,039 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-05-06 11:42:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:42:22,040 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 [2021-05-06 11:42:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:22,043 INFO L225 Difference]: With dead ends: 33 [2021-05-06 11:42:22,044 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 11:42:22,045 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:42:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 11:42:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 11:42:22,065 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) [2021-05-06 11:42:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-05-06 11:42:22,067 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-05-06 11:42:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:22,067 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-05-06 11:42:22,067 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) [2021-05-06 11:42:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-05-06 11:42:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:42:22,068 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:22,068 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:22,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:42:22,069 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:22,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:22,070 INFO L82 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 1 times [2021-05-06 11:42:22,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:22,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320435543] [2021-05-06 11:42:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:22,078 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:42:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:22,222 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:22,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320435543] [2021-05-06 11:42:22,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1320435543] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:22,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:22,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:42:22,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518581985] [2021-05-06 11:42:22,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:42:22,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:22,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:42:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:42:22,224 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) [2021-05-06 11:42:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:22,276 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-05-06 11:42:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:42:22,277 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 [2021-05-06 11:42:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:22,277 INFO L225 Difference]: With dead ends: 25 [2021-05-06 11:42:22,277 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 11:42:22,278 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:42:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 11:42:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-06 11:42:22,282 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) [2021-05-06 11:42:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-05-06 11:42:22,282 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-05-06 11:42:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:22,282 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-05-06 11:42:22,283 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) [2021-05-06 11:42:22,283 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-05-06 11:42:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 11:42:22,283 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:22,283 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:22,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:42:22,283 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:22,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:22,284 INFO L82 PathProgramCache]: Analyzing trace with hash -79339060, now seen corresponding path program 1 times [2021-05-06 11:42:22,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:22,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447623133] [2021-05-06 11:42:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:22,313 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.3 percent of original size [2021-05-06 11:42:22,315 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:22,325 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:26,347 WARN L205 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 16 [2021-05-06 11:42:30,399 WARN L205 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-06 11:42:32,415 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-06 11:42:32,461 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-06 11:42:32,469 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-06 11:42:32,537 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.3 percent of original size 73 [2021-05-06 11:42:32,560 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:42:32,562 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:42:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:32,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:42:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:42:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:42:33,216 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:42:33,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447623133] [2021-05-06 11:42:33,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1447623133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:42:33,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:42:33,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 11:42:33,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337781207] [2021-05-06 11:42:33,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 11:42:33,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:42:33,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 11:42:33,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:42:33,218 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 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) [2021-05-06 11:42:33,477 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-05-06 11:42:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:42:33,611 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-05-06 11:42:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 11:42:33,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 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 [2021-05-06 11:42:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:42:33,613 INFO L225 Difference]: With dead ends: 30 [2021-05-06 11:42:33,613 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 11:42:33,613 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 683.2ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:42:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 11:42:33,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-06 11:42:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-05-06 11:42:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-06 11:42:33,617 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2021-05-06 11:42:33,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:42:33,618 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-06 11:42:33,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 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) [2021-05-06 11:42:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-06 11:42:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-06 11:42:33,618 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:42:33,618 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:42:33,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 11:42:33,618 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:42:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:42:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1077515338, now seen corresponding path program 1 times [2021-05-06 11:42:33,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:42:33,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902184962] [2021-05-06 11:42:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:42:33,650 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.8 percent of original size [2021-05-06 11:42:33,670 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:33,676 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:33,786 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-06 11:42:33,795 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-06 11:42:33,836 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.8 percent of original size 78 [2021-05-06 11:42:33,924 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:42:33,926 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:42:33,932 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.3 percent of original size [2021-05-06 11:42:33,933 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:33,939 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:34,045 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-06 11:42:34,053 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-06 11:42:34,110 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.3 percent of original size 73 [2021-05-06 11:42:34,153 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:42:34,168 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 92.3 percent of original size [2021-05-06 11:42:34,209 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:34,212 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:42:34,632 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-06 11:42:34,677 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-06 11:42:34,682 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-06 11:42:34,704 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 92.3 percent of original size 84 [2021-05-06 11:42:34,758 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:42:34,762 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-06 11:42:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 11:42:34,804 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 11:42:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 11:42:34,856 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 11:42:34,867 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-06 11:42:34,867 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 11:42:34,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-06 11:42:34,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:42:34 BoogieIcfgContainer [2021-05-06 11:42:34,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:42:34,887 INFO L168 Benchmark]: Toolchain (without parser) took 13547.00 ms. Allocated memory was 191.9 MB in the beginning and 230.7 MB in the end (delta: 38.8 MB). Free memory was 156.3 MB in the beginning and 173.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:42:34,888 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 191.9 MB. Free memory is still 173.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:42:34,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.13 ms. Allocated memory is still 191.9 MB. Free memory was 156.0 MB in the beginning and 176.1 MB in the end (delta: -20.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:42:34,892 INFO L168 Benchmark]: Boogie Preprocessor took 46.74 ms. Allocated memory is still 191.9 MB. Free memory was 176.1 MB in the beginning and 174.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:42:34,892 INFO L168 Benchmark]: RCFGBuilder took 253.40 ms. Allocated memory is still 191.9 MB. Free memory was 174.4 MB in the beginning and 161.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:42:34,892 INFO L168 Benchmark]: TraceAbstraction took 13121.22 ms. Allocated memory was 191.9 MB in the beginning and 230.7 MB in the end (delta: 38.8 MB). Free memory was 160.8 MB in the beginning and 173.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:42:34,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 191.9 MB. Free memory is still 173.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 121.13 ms. Allocated memory is still 191.9 MB. Free memory was 156.0 MB in the beginning and 176.1 MB in the end (delta: -20.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.74 ms. Allocated memory is still 191.9 MB. Free memory was 176.1 MB in the beginning and 174.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 253.40 ms. Allocated memory is still 191.9 MB. Free memory was 174.4 MB in the beginning and 161.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13121.22 ms. Allocated memory was 191.9 MB in the beginning and 230.7 MB in the end (delta: 38.8 MB). Free memory was 160.8 MB in the beginning and 173.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 27.7 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) [L13] x++ [L10] COND TRUE x=5000000 [L12] z++ [L13] x++ [L10] COND FALSE !(x