/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:34:59,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:34:59,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:34:59,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 06:34:59,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:34:59,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:34:59,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:34:59,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:34:59,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:34:59,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:34:59,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:34:59,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:34:59,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:34:59,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:34:59,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:34:59,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:34:59,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:34:59,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:34:59,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:34:59,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:34:59,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:34:59,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:34:59,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:34:59,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:34:59,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:34:59,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:34:59,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:34:59,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:34:59,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:34:59,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:34:59,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:34:59,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:34:59,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:34:59,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:34:59,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:34:59,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:34:59,724 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:34:59,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:34:59,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:34:59,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:34:59,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:34:59,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:34:59,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:34:59,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:35:00,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:35:00,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:35:00,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:35:00,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:35:00,234 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:35:00,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-11-07 06:35:00,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1048fcd/a758d32681d34b15910d35aca4e786bf/FLAG22396b7c5 [2020-11-07 06:35:00,925 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:35:00,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-11-07 06:35:00,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1048fcd/a758d32681d34b15910d35aca4e786bf/FLAG22396b7c5 [2020-11-07 06:35:01,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1048fcd/a758d32681d34b15910d35aca4e786bf [2020-11-07 06:35:01,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:35:01,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:35:01,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:01,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:35:01,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:35:01,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f305ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01, skipping insertion in model container [2020-11-07 06:35:01,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:35:01,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:35:01,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:01,587 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:35:01,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:35:01,637 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:35:01,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01 WrapperNode [2020-11-07 06:35:01,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:35:01,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:35:01,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:35:01,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:35:01,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (1/1) ... [2020-11-07 06:35:01,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:35:01,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:35:01,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:35:01,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:35:01,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (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 [2020-11-07 06:35:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:35:01,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:35:01,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:35:01,817 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:35:01,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:35:01,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:35:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:35:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:35:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:35:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:35:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:35:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:35:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:35:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:35:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:35:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:35:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:35:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:35:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:35:01,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:35:02,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:35:02,252 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:35:02,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:02 BoogieIcfgContainer [2020-11-07 06:35:02,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:35:02,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:35:02,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:35:02,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:35:02,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:35:01" (1/3) ... [2020-11-07 06:35:02,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c7b767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:02, skipping insertion in model container [2020-11-07 06:35:02,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:01" (2/3) ... [2020-11-07 06:35:02,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c7b767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:02, skipping insertion in model container [2020-11-07 06:35:02,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:02" (3/3) ... [2020-11-07 06:35:02,263 INFO L111 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-11-07 06:35:02,282 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:35:02,286 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:35:02,314 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:35:02,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:35:02,341 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:35:02,341 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:35:02,342 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:35:02,342 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:35:02,342 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:35:02,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:35:02,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:35:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-07 06:35:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 06:35:02,371 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:02,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:02,372 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1217808793, now seen corresponding path program 1 times [2020-11-07 06:35:02,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:02,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134513190] [2020-11-07 06:35:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:02,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134513190] [2020-11-07 06:35:02,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:02,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:35:02,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435284976] [2020-11-07 06:35:02,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:35:02,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:02,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:35:02,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:35:02,698 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-11-07 06:35:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:02,827 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2020-11-07 06:35:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:35:02,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-07 06:35:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:02,839 INFO L225 Difference]: With dead ends: 74 [2020-11-07 06:35:02,840 INFO L226 Difference]: Without dead ends: 40 [2020-11-07 06:35:02,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:35:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-07 06:35:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-07 06:35:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-07 06:35:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-07 06:35:02,917 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 26 [2020-11-07 06:35:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:02,918 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-07 06:35:02,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:35:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-07 06:35:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 06:35:02,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:02,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:02,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:35:02,921 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:02,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:02,922 INFO L82 PathProgramCache]: Analyzing trace with hash 645225773, now seen corresponding path program 1 times [2020-11-07 06:35:02,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:02,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270819758] [2020-11-07 06:35:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:03,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270819758] [2020-11-07 06:35:03,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:03,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 06:35:03,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706332190] [2020-11-07 06:35:03,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:35:03,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:03,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:35:03,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:35:03,122 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 5 states. [2020-11-07 06:35:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:03,370 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-11-07 06:35:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 06:35:03,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-07 06:35:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:03,373 INFO L225 Difference]: With dead ends: 59 [2020-11-07 06:35:03,373 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 06:35:03,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:35:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 06:35:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2020-11-07 06:35:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 06:35:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-11-07 06:35:03,400 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 26 [2020-11-07 06:35:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:03,401 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-11-07 06:35:03,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:35:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-11-07 06:35:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-07 06:35:03,402 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:03,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:03,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:35:03,404 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1061974677, now seen corresponding path program 1 times [2020-11-07 06:35:03,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:03,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82449310] [2020-11-07 06:35:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:03,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:03,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82449310] [2020-11-07 06:35:03,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:03,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 06:35:03,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363121740] [2020-11-07 06:35:03,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:35:03,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:03,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:35:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:35:03,608 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 7 states. [2020-11-07 06:35:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:03,962 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-11-07 06:35:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 06:35:03,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-11-07 06:35:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:03,965 INFO L225 Difference]: With dead ends: 55 [2020-11-07 06:35:03,965 INFO L226 Difference]: Without dead ends: 52 [2020-11-07 06:35:03,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:35:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-07 06:35:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-11-07 06:35:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-07 06:35:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-07 06:35:03,984 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 27 [2020-11-07 06:35:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:03,985 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-07 06:35:03,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:35:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-07 06:35:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 06:35:03,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:03,987 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:03,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:35:03,987 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:03,988 INFO L82 PathProgramCache]: Analyzing trace with hash 594548319, now seen corresponding path program 1 times [2020-11-07 06:35:03,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:03,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218689473] [2020-11-07 06:35:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:04,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:35:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:04,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 06:35:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:35:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:35:04,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218689473] [2020-11-07 06:35:04,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:35:04,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:35:04,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125594744] [2020-11-07 06:35:04,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:35:04,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:35:04,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:35:04,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:35:04,202 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 9 states. [2020-11-07 06:35:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:35:04,711 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-11-07 06:35:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 06:35:04,712 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-11-07 06:35:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:35:04,714 INFO L225 Difference]: With dead ends: 66 [2020-11-07 06:35:04,714 INFO L226 Difference]: Without dead ends: 63 [2020-11-07 06:35:04,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:35:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-07 06:35:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-11-07 06:35:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 06:35:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-11-07 06:35:04,751 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 37 [2020-11-07 06:35:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:35:04,752 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-11-07 06:35:04,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:35:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-11-07 06:35:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 06:35:04,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:35:04,754 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:35:04,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:35:04,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:35:04,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:35:04,761 INFO L82 PathProgramCache]: Analyzing trace with hash 2073888240, now seen corresponding path program 1 times [2020-11-07 06:35:04,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:35:04,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788616656] [2020-11-07 06:35:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:35:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 06:35:04,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 06:35:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 06:35:04,804 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 06:35:04,842 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 06:35:04,842 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 06:35:04,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:35:04,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:35:04 BoogieIcfgContainer [2020-11-07 06:35:04,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:35:04,927 INFO L168 Benchmark]: Toolchain (without parser) took 3632.00 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 127.5 MB in the beginning and 167.4 MB in the end (delta: -40.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:04,928 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:35:04,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.71 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:04,932 INFO L168 Benchmark]: Boogie Preprocessor took 74.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:04,933 INFO L168 Benchmark]: RCFGBuilder took 536.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 99.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 06:35:04,934 INFO L168 Benchmark]: TraceAbstraction took 2668.65 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 99.2 MB in the beginning and 167.4 MB in the end (delta: -68.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:35:04,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 337.71 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 536.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 99.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2668.65 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 99.2 MB in the beginning and 167.4 MB in the end (delta: -68.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int i=0, x=0, y=0; VAL [i=0, x=0, y=0] [L20] int n=__VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, i=0, n=1, x=0, y=0] [L21] COND FALSE !(!(n>0)) VAL [i=0, n=1, x=0, y=0] [L22] i=0 VAL [i=0, n=1, x=0, y=0] [L22] COND TRUE i