/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 BIGGEST_EQUIVALENCE_CLASS --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/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:03:53,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:03:53,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:03:53,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:03:53,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:03:53,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:03:53,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:03:53,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:03:53,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:03:53,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:03:53,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:03:53,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:03:53,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:03:53,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:03:53,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:03:53,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:03:53,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:03:53,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:03:53,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:03:53,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:03:53,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:03:53,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:03:53,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:03:53,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:03:53,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 06:03:53,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 06:03:53,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 06:03:53,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 06:03:53,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 06:03:53,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 06:03:53,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 06:03:53,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 06:03:53,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 06:03:53,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 06:03:53,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 06:03:53,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 06:03:53,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 06:03:53,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 06:03:53,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:03:53,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:03:53,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:03:53,829 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 06:03:53,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:03:53,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:03:53,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:03:53,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:03:53,850 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:03:53,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:03:53,850 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:03:53,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:03:53,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:03:53,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:03:53,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:03:53,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:03:53,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:03:53,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:03:53,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:03:53,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:03:53,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:03:53,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:03:53,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:03:53,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:03:53,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:03:53,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:03:53,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:03:53,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:03:53,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:03:53,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:03:53,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:03:53,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:03:53,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:03:53,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 06:03:54,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:03:54,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:03:54,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:03:54,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:03:54,242 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:03:54,243 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-07-20 06:03:54,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b61fec88/ef9c2b211017472eb346a31c4bd8a9cf/FLAG06e4f277d [2020-07-20 06:03:54,979 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:03:54,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c [2020-07-20 06:03:54,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b61fec88/ef9c2b211017472eb346a31c4bd8a9cf/FLAG06e4f277d [2020-07-20 06:03:55,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b61fec88/ef9c2b211017472eb346a31c4bd8a9cf [2020-07-20 06:03:55,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:03:55,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:03:55,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:03:55,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:03:55,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:03:55,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128e50c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55, skipping insertion in model container [2020-07-20 06:03:55,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:03:55,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:03:55,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:03:55,655 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:03:55,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:03:55,712 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:03:55,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55 WrapperNode [2020-07-20 06:03:55,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:03:55,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:03:55,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:03:55,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:03:55,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (1/1) ... [2020-07-20 06:03:55,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:03:55,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:03:55,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:03:55,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:03:55,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (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 06:03:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:03:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:03:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:03:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:03:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:03:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:03:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:03:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:03:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 06:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 06:03:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:03:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:03:56,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:03:56,370 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 06:03:56,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:03:56 BoogieIcfgContainer [2020-07-20 06:03:56,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:03:56,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:03:56,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:03:56,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:03:56,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:03:55" (1/3) ... [2020-07-20 06:03:56,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591302e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:03:56, skipping insertion in model container [2020-07-20 06:03:56,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:55" (2/3) ... [2020-07-20 06:03:56,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591302e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:03:56, skipping insertion in model container [2020-07-20 06:03:56,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:03:56" (3/3) ... [2020-07-20 06:03:56,387 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-07-20 06:03:56,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:03:56,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:03:56,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:03:56,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:03:56,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:03:56,468 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:03:56,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:03:56,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:03:56,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:03:56,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:03:56,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:03:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-20 06:03:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 06:03:56,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:56,497 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] [2020-07-20 06:03:56,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-20 06:03:56,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:56,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338963845] [2020-07-20 06:03:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2898f830 [2020-07-20 06:03:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:56,759 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 06:03:56,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338963845] [2020-07-20 06:03:56,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:03:56,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:03:56,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487031670] [2020-07-20 06:03:56,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:03:56,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:03:56,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:03:56,784 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-20 06:03:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:56,961 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-20 06:03:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:03:56,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 06:03:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:56,976 INFO L225 Difference]: With dead ends: 56 [2020-07-20 06:03:56,977 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 06:03:56,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 06:03:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 06:03:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-20 06:03:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 06:03:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-20 06:03:57,043 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-07-20 06:03:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:57,044 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-20 06:03:57,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:03:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-20 06:03:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 06:03:57,046 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:57,046 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] [2020-07-20 06:03:57,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:03:57,047 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:57,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-20 06:03:57,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:57,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624677524] [2020-07-20 06:03:57,049 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2898f830 [2020-07-20 06:03:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:57,227 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 06:03:57,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624677524] [2020-07-20 06:03:57,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:03:57,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:03:57,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992590426] [2020-07-20 06:03:57,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:03:57,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:03:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:03:57,240 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-07-20 06:03:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:57,469 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-20 06:03:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:03:57,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-20 06:03:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:57,472 INFO L225 Difference]: With dead ends: 45 [2020-07-20 06:03:57,472 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 06:03:57,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:03:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 06:03:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-20 06:03:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 06:03:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 06:03:57,485 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-07-20 06:03:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:57,486 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 06:03:57,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:03:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 06:03:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 06:03:57,487 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:57,488 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] [2020-07-20 06:03:57,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:03:57,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-20 06:03:57,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:57,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568211689] [2020-07-20 06:03:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2898f830 [2020-07-20 06:03:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 06:03:57,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568211689] [2020-07-20 06:03:57,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:03:57,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 06:03:57,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632400866] [2020-07-20 06:03:57,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 06:03:57,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:57,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 06:03:57,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:03:57,729 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-07-20 06:03:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:58,105 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-07-20 06:03:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 06:03:58,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-20 06:03:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:58,107 INFO L225 Difference]: With dead ends: 39 [2020-07-20 06:03:58,107 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 06:03:58,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-07-20 06:03:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 06:03:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-20 06:03:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 06:03:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 06:03:58,121 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-07-20 06:03:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:58,122 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 06:03:58,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 06:03:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 06:03:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 06:03:58,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:58,123 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 06:03:58,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:03:58,124 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-07-20 06:03:58,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:58,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272217949] [2020-07-20 06:03:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2898f830 [2020-07-20 06:03:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:03:58,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272217949] [2020-07-20 06:03:58,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151488036] [2020-07-20 06:03:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@14e20d90 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:58,341 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@14e20d90 issued 4 check-sat command(s) [2020-07-20 06:03:58,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:58,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 06:03:58,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:03:58,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:03:58,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-07-20 06:03:58,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228080964] [2020-07-20 06:03:58,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 06:03:58,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:58,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 06:03:58,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-20 06:03:58,429 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-07-20 06:03:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:58,627 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-20 06:03:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 06:03:58,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-07-20 06:03:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:58,629 INFO L225 Difference]: With dead ends: 55 [2020-07-20 06:03:58,630 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 06:03:58,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-20 06:03:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 06:03:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-07-20 06:03:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 06:03:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-20 06:03:58,639 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2020-07-20 06:03:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:58,639 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-20 06:03:58,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 06:03:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-20 06:03:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 06:03:58,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:58,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-07-20 06:03:58,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:58,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-07-20 06:03:58,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:58,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734121300] [2020-07-20 06:03:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2898f830 [2020-07-20 06:03:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:03:59,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734121300] [2020-07-20 06:03:59,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882444221] [2020-07-20 06:03:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@413c540 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:59,393 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@413c540 issued 4 check-sat command(s) [2020-07-20 06:03:59,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:59,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 06:03:59,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:59,517 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 06:03:59,517 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 06:03:59,527 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 06:03:59,528 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 06:03:59,528 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-07-20 06:03:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 06:03:59,589 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-07-20 06:03:59,590 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 06:03:59,601 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 06:03:59,602 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 06:03:59,602 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-07-20 06:03:59,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 06:03:59,749 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2020-07-20 06:03:59,751 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 06:03:59,760 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 06:03:59,762 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 06:03:59,763 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:29 [2020-07-20 06:03:59,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 06:03:59,832 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-07-20 06:03:59,833 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 06:03:59,839 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 06:03:59,841 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 06:03:59,841 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:36, output treesize:7 [2020-07-20 06:03:59,873 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:03:59,879 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:03:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:03:59,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:03:59,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2020-07-20 06:03:59,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830522214] [2020-07-20 06:03:59,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 06:03:59,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:59,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 06:03:59,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-07-20 06:03:59,942 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 23 states. [2020-07-20 06:04:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:04:00,709 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-07-20 06:04:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 06:04:00,710 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 33 [2020-07-20 06:04:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:04:00,713 INFO L225 Difference]: With dead ends: 64 [2020-07-20 06:04:00,718 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 06:04:00,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2020-07-20 06:04:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 06:04:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-07-20 06:04:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 06:04:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-07-20 06:04:00,747 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2020-07-20 06:04:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:04:00,747 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-07-20 06:04:00,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 06:04:00,748 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-07-20 06:04:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 06:04:00,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:00,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2020-07-20 06:04:00,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:04:00,957 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:00,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:00,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2145280396, now seen corresponding path program 2 times [2020-07-20 06:04:00,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:00,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823790132] [2020-07-20 06:04:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2898f830 [2020-07-20 06:04:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:04:01,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823790132] [2020-07-20 06:04:01,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41654726] [2020-07-20 06:04:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@166484f3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:04:01,155 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@166484f3 issued 4 check-sat command(s) [2020-07-20 06:04:01,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:04:01,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 06:04:01,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:04:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:04:01,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:04:01,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2020-07-20 06:04:01,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263434133] [2020-07-20 06:04:01,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 06:04:01,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:04:01,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 06:04:01,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-07-20 06:04:01,233 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 14 states. [2020-07-20 06:04:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:04:01,552 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-07-20 06:04:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 06:04:01,553 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-07-20 06:04:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:04:01,555 INFO L225 Difference]: With dead ends: 66 [2020-07-20 06:04:01,555 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 06:04:01,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-07-20 06:04:01,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 06:04:01,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-07-20 06:04:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 06:04:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-07-20 06:04:01,582 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2020-07-20 06:04:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:04:01,583 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-07-20 06:04:01,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 06:04:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-07-20 06:04:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 06:04:01,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:01,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-07-20 06:04:01,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:04:01,805 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:01,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1680039082, now seen corresponding path program 3 times [2020-07-20 06:04:01,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:01,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299265532] [2020-07-20 06:04:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2898f830 [2020-07-20 06:04:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:04:01,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:04:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:04:01,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:04:01,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 06:04:01,901 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 06:04:01,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 06:04:01,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:04:01 BoogieIcfgContainer [2020-07-20 06:04:01,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:04:01,956 INFO L168 Benchmark]: Toolchain (without parser) took 6640.85 ms. Allocated memory was 133.2 MB in the beginning and 262.1 MB in the end (delta: 129.0 MB). Free memory was 98.2 MB in the beginning and 210.8 MB in the end (delta: -112.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:01,957 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 116.2 MB in the beginning and 116.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 06:04:01,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.39 ms. Allocated memory is still 133.2 MB. Free memory was 97.8 MB in the beginning and 87.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:01,959 INFO L168 Benchmark]: Boogie Preprocessor took 169.22 ms. Allocated memory was 133.2 MB in the beginning and 198.2 MB in the end (delta: 65.0 MB). Free memory was 87.4 MB in the beginning and 176.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:01,960 INFO L168 Benchmark]: RCFGBuilder took 493.13 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 158.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:01,961 INFO L168 Benchmark]: TraceAbstraction took 5575.64 ms. Allocated memory was 198.2 MB in the beginning and 262.1 MB in the end (delta: 64.0 MB). Free memory was 158.4 MB in the beginning and 210.8 MB in the end (delta: -52.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:01,966 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 116.2 MB in the beginning and 116.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.39 ms. Allocated memory is still 133.2 MB. Free memory was 97.8 MB in the beginning and 87.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.22 ms. Allocated memory was 133.2 MB in the beginning and 198.2 MB in the end (delta: 65.0 MB). Free memory was 87.4 MB in the beginning and 176.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.13 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 158.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5575.64 ms. Allocated memory was 198.2 MB in the beginning and 262.1 MB in the end (delta: 64.0 MB). Free memory was 158.4 MB in the beginning and 210.8 MB in the end (delta: -52.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=22, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=3] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=3] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=3] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=3] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=3, sum={2:0}] [L29] COND TRUE i