/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:56,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:56,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:56,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:56,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:56,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:56,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:56,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:56,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:56,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:56,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:56,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:56,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:56,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:56,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:56,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:56,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:56,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:56,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:56,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:56,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:56,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:56,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:56,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:56,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:56,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:56,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:56,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:56,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:44:56,582 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:56,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:56,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:56,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:56,588 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:56,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:56,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:56,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:56,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:56,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:56,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:56,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:56,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:56,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:56,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:56,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:56,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:56,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:56,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:56,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:56,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:56,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:56,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:56,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:56,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:56,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:56,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:56,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:56,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:56,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:57,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:57,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:57,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:57,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:57,096 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:57,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-11-06 22:44:57,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d141fc62f/53e2c92da0ee4b0c98a26f4e8479d5ec/FLAG8d537ed7e [2020-11-06 22:44:57,923 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:57,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-11-06 22:44:57,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d141fc62f/53e2c92da0ee4b0c98a26f4e8479d5ec/FLAG8d537ed7e [2020-11-06 22:44:58,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d141fc62f/53e2c92da0ee4b0c98a26f4e8479d5ec [2020-11-06 22:44:58,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:58,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:58,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:58,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:58,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:58,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ad513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58, skipping insertion in model container [2020-11-06 22:44:58,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:58,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:58,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:58,488 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:58,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:58,524 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:58,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58 WrapperNode [2020-11-06 22:44:58,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:58,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:58,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:58,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:58,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ... [2020-11-06 22:44:58,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:58,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:58,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:58,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:58,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (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 [2020-11-06 22:44:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:58,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:58,923 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:44:58,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:58 BoogieIcfgContainer [2020-11-06 22:44:58,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:58,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:58,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:58,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:58,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:58" (1/3) ... [2020-11-06 22:44:58,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dd35cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:58, skipping insertion in model container [2020-11-06 22:44:58,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (2/3) ... [2020-11-06 22:44:58,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dd35cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:58, skipping insertion in model container [2020-11-06 22:44:58,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:58" (3/3) ... [2020-11-06 22:44:58,936 INFO L111 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-11-06 22:44:58,963 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:58,973 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:59,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:59,092 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:59,092 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:59,093 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:59,093 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:59,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:59,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:59,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:59,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-06 22:44:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:44:59,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:59,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:59,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:59,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2024755940, now seen corresponding path program 1 times [2020-11-06 22:44:59,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:59,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609455795] [2020-11-06 22:44:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:59,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609455795] [2020-11-06 22:44:59,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:59,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:59,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134879205] [2020-11-06 22:44:59,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:59,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:59,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:59,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:59,747 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-11-06 22:44:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:59,872 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-11-06 22:44:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:59,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-06 22:44:59,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:59,897 INFO L225 Difference]: With dead ends: 46 [2020-11-06 22:44:59,897 INFO L226 Difference]: Without dead ends: 21 [2020-11-06 22:44:59,901 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 [2020-11-06 22:44:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-06 22:44:59,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-06 22:44:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-06 22:44:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-06 22:44:59,955 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13 [2020-11-06 22:44:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:59,956 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-06 22:44:59,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-06 22:44:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:44:59,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:59,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:59,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:59,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:59,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1898032393, now seen corresponding path program 1 times [2020-11-06 22:44:59,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:59,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333790814] [2020-11-06 22:44:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:00,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:00,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333790814] [2020-11-06 22:45:00,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:00,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:45:00,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950798049] [2020-11-06 22:45:00,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:45:00,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:00,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:45:00,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:45:00,159 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-11-06 22:45:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:00,322 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-11-06 22:45:00,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:45:00,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-06 22:45:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:00,325 INFO L225 Difference]: With dead ends: 35 [2020-11-06 22:45:00,325 INFO L226 Difference]: Without dead ends: 27 [2020-11-06 22:45:00,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:45:00,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-06 22:45:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-11-06 22:45:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-06 22:45:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-06 22:45:00,339 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2020-11-06 22:45:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:00,340 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-06 22:45:00,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:45:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-06 22:45:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:45:00,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:00,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:00,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:45:00,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:00,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1951596611, now seen corresponding path program 1 times [2020-11-06 22:45:00,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:00,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481525735] [2020-11-06 22:45:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:00,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481525735] [2020-11-06 22:45:00,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:00,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:45:00,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535406320] [2020-11-06 22:45:00,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:45:00,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:00,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:45:00,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:45:00,492 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states. [2020-11-06 22:45:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:00,806 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-06 22:45:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:45:00,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-06 22:45:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:00,808 INFO L225 Difference]: With dead ends: 32 [2020-11-06 22:45:00,808 INFO L226 Difference]: Without dead ends: 29 [2020-11-06 22:45:00,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:45:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-06 22:45:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-06 22:45:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-06 22:45:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-06 22:45:00,819 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 13 [2020-11-06 22:45:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:00,820 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-06 22:45:00,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:45:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-06 22:45:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:45:00,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:00,821 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:00,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:45:00,822 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:00,823 INFO L82 PathProgramCache]: Analyzing trace with hash -549680435, now seen corresponding path program 1 times [2020-11-06 22:45:00,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:00,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195712829] [2020-11-06 22:45:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:00,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:45:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:00,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195712829] [2020-11-06 22:45:00,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:00,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:45:00,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8896462] [2020-11-06 22:45:00,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:45:00,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:00,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:45:00,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:45:00,966 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2020-11-06 22:45:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:01,287 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-06 22:45:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:45:01,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-11-06 22:45:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:01,289 INFO L225 Difference]: With dead ends: 40 [2020-11-06 22:45:01,289 INFO L226 Difference]: Without dead ends: 37 [2020-11-06 22:45:01,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:45:01,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-06 22:45:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-11-06 22:45:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-06 22:45:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-11-06 22:45:01,299 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 20 [2020-11-06 22:45:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:01,299 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-11-06 22:45:01,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:45:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-11-06 22:45:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:45:01,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:01,301 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] [2020-11-06 22:45:01,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:45:01,301 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:01,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:01,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1572252782, now seen corresponding path program 1 times [2020-11-06 22:45:01,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:01,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129889950] [2020-11-06 22:45:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:01,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:01,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:01,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:45:01,385 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:45:01,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:45:01,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:01 BoogieIcfgContainer [2020-11-06 22:45:01,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:01,442 INFO L168 Benchmark]: Toolchain (without parser) took 3171.44 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 126.3 MB in the beginning and 84.3 MB in the end (delta: 42.0 MB). Peak memory consumption was 83.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:01,443 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:01,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:01,445 INFO L168 Benchmark]: Boogie Preprocessor took 41.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:01,446 INFO L168 Benchmark]: RCFGBuilder took 356.10 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 100.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:01,447 INFO L168 Benchmark]: TraceAbstraction took 2512.46 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 100.4 MB in the beginning and 84.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:01,452 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 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 356.10 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 100.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2512.46 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 100.4 MB in the beginning and 84.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 57.1 MB. 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; [L20] int n=__VERIFIER_nondet_int(); [L21] COND FALSE !(!(n>0)) [L22] i=0 VAL [i=0, n=1, x=0, y=0] [L22] COND TRUE i