/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:57:55,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:57:55,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:57:55,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:57:55,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:57:55,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:57:55,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:57:55,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:57:55,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:57:55,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:57:55,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:57:55,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:57:55,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:57:55,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:57:55,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:57:55,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:57:55,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:57:55,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:57:55,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:57:55,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:57:55,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:57:55,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:57:55,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:57:55,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:57:55,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:57:55,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:57:55,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:57:55,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:57:55,938 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 [2020-07-20 03:57:55,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:57:55,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:57:55,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:57:55,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:57:55,975 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:57:55,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:57:55,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:57:55,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:57:55,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:57:55,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:57:55,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:57:55,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:57:55,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:57:55,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:57:55,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:57:55,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:57:55,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:57:55,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:57:55,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:57:55,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:57:55,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:57:55,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:57:55,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:57:55,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:57:55,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:57:55,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:57:55,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:57:55,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:57:55,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:57:55,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:57:56,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:57:56,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:57:56,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:57:56,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:57:56,429 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:57:56,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-07-20 03:57:56,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5569848f0/aee96de1b37c41c0b66d795f9a57a27c/FLAG16d045429 [2020-07-20 03:57:57,202 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:57:57,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-07-20 03:57:57,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5569848f0/aee96de1b37c41c0b66d795f9a57a27c/FLAG16d045429 [2020-07-20 03:57:57,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5569848f0/aee96de1b37c41c0b66d795f9a57a27c [2020-07-20 03:57:57,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:57:57,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:57:57,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:57:57,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:57:57,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:57:57,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129a213e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57, skipping insertion in model container [2020-07-20 03:57:57,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:57:57,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:57:57,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:57:57,784 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:57:57,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:57:57,825 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:57:57,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57 WrapperNode [2020-07-20 03:57:57,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:57:57,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:57:57,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:57:57,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:57:57,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (1/1) ... [2020-07-20 03:57:57,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:57:57,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:57:57,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:57:57,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:57:57,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (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 [2020-07-20 03:57:58,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:57:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:57:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 03:57:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 03:57:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:57:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:57:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:57:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 03:57:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 03:57:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:57:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:57:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:57:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:57:58,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:57:58,361 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 03:57:58,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:57:58 BoogieIcfgContainer [2020-07-20 03:57:58,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:57:58,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:57:58,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:57:58,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:57:58,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:57:57" (1/3) ... [2020-07-20 03:57:58,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330d459a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:57:58, skipping insertion in model container [2020-07-20 03:57:58,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:57" (2/3) ... [2020-07-20 03:57:58,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330d459a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:57:58, skipping insertion in model container [2020-07-20 03:57:58,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:57:58" (3/3) ... [2020-07-20 03:57:58,424 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-07-20 03:57:58,463 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:57:58,481 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:57:58,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:57:58,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:57:58,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:57:58,539 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:57:58,539 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:57:58,539 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:57:58,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:57:58,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:57:58,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:57:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-20 03:57:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 03:57:58,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:57:58,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:57:58,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:57:58,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:57:58,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1474053726, now seen corresponding path program 1 times [2020-07-20 03:57:58,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:57:58,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144403377] [2020-07-20 03:57:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@421fc6a0 [2020-07-20 03:57:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:57:58,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144403377] [2020-07-20 03:57:58,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:57:58,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 03:57:58,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148590431] [2020-07-20 03:57:58,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 03:57:58,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:57:58,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 03:57:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 03:57:58,792 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-20 03:57:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:57:58,834 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-07-20 03:57:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 03:57:58,836 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-20 03:57:58,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:57:58,854 INFO L225 Difference]: With dead ends: 40 [2020-07-20 03:57:58,855 INFO L226 Difference]: Without dead ends: 19 [2020-07-20 03:57:58,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 03:57:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-20 03:57:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-20 03:57:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 03:57:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-20 03:57:58,944 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-07-20 03:57:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:57:58,945 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-20 03:57:58,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 03:57:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-20 03:57:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 03:57:58,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:57:58,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:57:58,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:57:58,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:57:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:57:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1462047953, now seen corresponding path program 1 times [2020-07-20 03:57:58,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:57:58,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311739880] [2020-07-20 03:57:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@421fc6a0 [2020-07-20 03:57:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:57:59,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311739880] [2020-07-20 03:57:59,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:57:59,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:57:59,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925801565] [2020-07-20 03:57:59,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:57:59,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:57:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:57:59,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:57:59,124 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-07-20 03:57:59,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:57:59,236 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-20 03:57:59,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:57:59,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-07-20 03:57:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:57:59,240 INFO L225 Difference]: With dead ends: 27 [2020-07-20 03:57:59,240 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 03:57:59,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:57:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 03:57:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-20 03:57:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-20 03:57:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-07-20 03:57:59,254 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-07-20 03:57:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:57:59,254 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-07-20 03:57:59,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:57:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-07-20 03:57:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 03:57:59,255 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:57:59,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:57:59,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:57:59,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:57:59,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:57:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1463775831, now seen corresponding path program 1 times [2020-07-20 03:57:59,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:57:59,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027600138] [2020-07-20 03:57:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@421fc6a0 [2020-07-20 03:57:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:57:59,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027600138] [2020-07-20 03:57:59,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:57:59,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:57:59,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103851375] [2020-07-20 03:57:59,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:57:59,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:57:59,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:57:59,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:57:59,430 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-07-20 03:57:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:57:59,624 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-07-20 03:57:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 03:57:59,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-20 03:57:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:57:59,628 INFO L225 Difference]: With dead ends: 28 [2020-07-20 03:57:59,629 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 03:57:59,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:57:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 03:57:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-07-20 03:57:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 03:57:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-20 03:57:59,647 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2020-07-20 03:57:59,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:57:59,648 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-20 03:57:59,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:57:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-20 03:57:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:57:59,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:57:59,650 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:57:59,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:57:59,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:57:59,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:57:59,651 INFO L82 PathProgramCache]: Analyzing trace with hash -541842987, now seen corresponding path program 1 times [2020-07-20 03:57:59,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:57:59,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702273166] [2020-07-20 03:57:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@421fc6a0 [2020-07-20 03:57:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:57:59,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702273166] [2020-07-20 03:57:59,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:57:59,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 03:57:59,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864958813] [2020-07-20 03:57:59,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 03:57:59,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:57:59,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 03:57:59,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 03:57:59,928 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-07-20 03:58:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:58:00,113 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-20 03:58:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 03:58:00,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-07-20 03:58:00,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:58:00,117 INFO L225 Difference]: With dead ends: 32 [2020-07-20 03:58:00,117 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 03:58:00,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-20 03:58:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 03:58:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-07-20 03:58:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 03:58:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-20 03:58:00,130 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2020-07-20 03:58:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:58:00,130 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-20 03:58:00,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 03:58:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-20 03:58:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:58:00,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:58:00,133 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] [2020-07-20 03:58:00,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 03:58:00,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:58:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:58:00,134 INFO L82 PathProgramCache]: Analyzing trace with hash 814692392, now seen corresponding path program 1 times [2020-07-20 03:58:00,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:58:00,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122265687] [2020-07-20 03:58:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@421fc6a0 [2020-07-20 03:58:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:58:00,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:58:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:58:00,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:58:00,260 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:58:00,260 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:58:00,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:58:00,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:58:00 BoogieIcfgContainer [2020-07-20 03:58:00,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:58:00,296 INFO L168 Benchmark]: Toolchain (without parser) took 2834.83 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 95.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:00,298 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 03:58:00,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.09 ms. Allocated memory is still 137.4 MB. Free memory was 102.4 MB in the beginning and 93.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:00,300 INFO L168 Benchmark]: Boogie Preprocessor took 41.36 ms. Allocated memory is still 137.4 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:00,302 INFO L168 Benchmark]: RCFGBuilder took 503.54 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 167.0 MB in the end (delta: -75.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:00,303 INFO L168 Benchmark]: TraceAbstraction took 1917.48 ms. Allocated memory is still 200.3 MB. Free memory was 166.3 MB in the beginning and 95.3 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:00,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.09 ms. Allocated memory is still 137.4 MB. Free memory was 102.4 MB in the beginning and 93.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.36 ms. Allocated memory is still 137.4 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.54 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 167.0 MB in the end (delta: -75.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1917.48 ms. Allocated memory is still 200.3 MB. Free memory was 166.3 MB in the beginning and 95.3 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i=0, x=0, y=0; [L18] int n=__VERIFIER_nondet_int(); [L19] COND FALSE !(!(n>0)) [L20] i=0 VAL [i=0, n=1, x=0, y=0] [L20] COND TRUE i