/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s2iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:40:41,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:40:41,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:40:41,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:40:41,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:40:41,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:40:41,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:40:41,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:40:41,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:40:41,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:40:41,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:40:41,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:40:41,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:40:41,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:40:41,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:40:41,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:40:41,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:40:41,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:40:41,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:40:41,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:40:41,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:40:41,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:40:41,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:40:41,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:40:41,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 01:40:41,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 01:40:41,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 01:40:41,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 01:40:41,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 01:40:41,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 01:40:41,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 01:40:41,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 01:40:41,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 01:40:41,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 01:40:41,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 01:40:41,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 01:40:41,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 01:40:41,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 01:40:41,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:40:41,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:40:41,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:40:41,915 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 [2020-07-21 01:40:41,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:40:41,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:40:41,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:40:41,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:40:41,951 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:40:41,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:40:41,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:40:41,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:40:41,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:40:41,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:40:41,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:40:41,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:40:41,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:40:41,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:40:41,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:40:41,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:40:41,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:40:41,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:40:41,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:40:41,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:40:41,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:40:41,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:40:41,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:40:41,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:40:41,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:40:41,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:40:41,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:41,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:40:41,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:40:41,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC 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 [2020-07-21 01:40:42,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:40:42,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:40:42,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:40:42,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:40:42,322 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:40:42,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-07-21 01:40:42,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64bc5bca6/5b809f1b4ac347208d2d59a8987a2fd4/FLAGa5bae657e [2020-07-21 01:40:42,877 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:40:42,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2iff.c [2020-07-21 01:40:42,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64bc5bca6/5b809f1b4ac347208d2d59a8987a2fd4/FLAGa5bae657e [2020-07-21 01:40:43,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64bc5bca6/5b809f1b4ac347208d2d59a8987a2fd4 [2020-07-21 01:40:43,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:40:43,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:40:43,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:40:43,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:40:43,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:40:43,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ccaf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43, skipping insertion in model container [2020-07-21 01:40:43,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:40:43,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:40:43,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:40:43,517 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:40:43,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:40:43,560 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:40:43,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43 WrapperNode [2020-07-21 01:40:43,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:40:43,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:40:43,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:40:43,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:40:43,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (1/1) ... [2020-07-21 01:40:43,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:40:43,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:40:43,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:40:43,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:40:43,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (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 [2020-07-21 01:40:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:40:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:40:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 01:40:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 01:40:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:40:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:40:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 01:40:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 01:40:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 01:40:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:40:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:40:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:40:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:40:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:40:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:40:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:40:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:40:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:40:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:40:44,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:40:44,252 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 01:40:44,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:44 BoogieIcfgContainer [2020-07-21 01:40:44,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:40:44,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:40:44,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:40:44,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:40:44,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:40:43" (1/3) ... [2020-07-21 01:40:44,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f429406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:44, skipping insertion in model container [2020-07-21 01:40:44,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:43" (2/3) ... [2020-07-21 01:40:44,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f429406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:44, skipping insertion in model container [2020-07-21 01:40:44,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:44" (3/3) ... [2020-07-21 01:40:44,271 INFO L109 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-07-21 01:40:44,284 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:40:44,294 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:40:44,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:40:44,340 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:40:44,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:40:44,340 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:40:44,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:40:44,341 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:40:44,341 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:40:44,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:40:44,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:40:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-21 01:40:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 01:40:44,373 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:40:44,375 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] [2020-07-21 01:40:44,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:40:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:40:44,382 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-07-21 01:40:44,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:40:44,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225867568] [2020-07-21 01:40:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:44,519 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:40:44,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:40:44,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:40:44,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:40:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:44,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:40:44,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225867568] [2020-07-21 01:40:44,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:40:44,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:40:44,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292195580] [2020-07-21 01:40:44,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:40:44,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:40:44,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:40:44,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:40:44,591 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-07-21 01:40:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:40:44,621 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-07-21 01:40:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:40:44,623 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-07-21 01:40:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:40:44,635 INFO L225 Difference]: With dead ends: 54 [2020-07-21 01:40:44,636 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 01:40:44,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:40:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 01:40:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 01:40:44,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 01:40:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-07-21 01:40:44,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-07-21 01:40:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:40:44,697 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-07-21 01:40:44,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:40:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-07-21 01:40:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 01:40:44,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:40:44,699 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] [2020-07-21 01:40:44,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:44,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:40:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:40:44,915 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-07-21 01:40:44,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:40:44,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404057044] [2020-07-21 01:40:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:44,993 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:40:44,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:40:44,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:40:45,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:40:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:45,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:40:45,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404057044] [2020-07-21 01:40:45,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:40:45,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:40:45,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960950712] [2020-07-21 01:40:45,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:40:45,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:40:45,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:40:45,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:40:45,083 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 4 states. [2020-07-21 01:40:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:40:45,168 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-07-21 01:40:45,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:40:45,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-21 01:40:45,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:40:45,171 INFO L225 Difference]: With dead ends: 40 [2020-07-21 01:40:45,171 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 01:40:45,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:40:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 01:40:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-07-21 01:40:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 01:40:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-07-21 01:40:45,182 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-07-21 01:40:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:40:45,182 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-07-21 01:40:45,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:40:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-07-21 01:40:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 01:40:45,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:40:45,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:40:45,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:45,401 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:40:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:40:45,402 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-07-21 01:40:45,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:40:45,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746275289] [2020-07-21 01:40:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:45,501 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:40:45,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:40:45,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 01:40:45,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:40:45,612 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 11 treesize of output 7 [2020-07-21 01:40:45,613 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:40:45,629 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:45,630 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:40:45,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-07-21 01:40:45,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:40:45,679 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 23 treesize of output 22 [2020-07-21 01:40:45,682 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:40:45,701 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:45,702 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:40:45,703 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2020-07-21 01:40:45,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:40:45,945 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:45,945 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2020-07-21 01:40:45,948 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:40:45,993 INFO L624 ElimStorePlain]: treesize reduction 30, result has 63.4 percent of original size [2020-07-21 01:40:46,001 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 01:40:46,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:71, output treesize:52 [2020-07-21 01:40:46,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:40:46,099 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:46,100 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2020-07-21 01:40:46,102 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:40:46,127 INFO L624 ElimStorePlain]: treesize reduction 18, result has 52.6 percent of original size [2020-07-21 01:40:46,129 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:40:46,130 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:59, output treesize:10 [2020-07-21 01:40:46,156 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:40:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:46,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:40:46,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:40:49,754 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 01:40:49,799 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:40:49,812 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:49,813 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 50 [2020-07-21 01:40:49,846 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:40:49,855 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:40:49,858 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 50 treesize of output 44 [2020-07-21 01:40:49,865 INFO L440 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_8]} [2020-07-21 01:40:49,874 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-07-21 01:40:49,875 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:40:49,893 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:49,906 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 67 [2020-07-21 01:40:49,909 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:40:49,910 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:40:49,913 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 01:40:49,929 INFO L624 ElimStorePlain]: treesize reduction 43, result has 10.4 percent of original size [2020-07-21 01:40:49,930 INFO L544 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:40:49,933 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:49,934 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:40:49,949 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:40:49,951 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:40:49,951 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:104, output treesize:9 [2020-07-21 01:40:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:49,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746275289] [2020-07-21 01:40:49,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:40:49,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-07-21 01:40:49,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171318858] [2020-07-21 01:40:49,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-21 01:40:49,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:40:49,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-21 01:40:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=274, Unknown=2, NotChecked=0, Total=342 [2020-07-21 01:40:49,982 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 19 states. [2020-07-21 01:40:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:40:51,170 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-07-21 01:40:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 01:40:51,170 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2020-07-21 01:40:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:40:51,172 INFO L225 Difference]: With dead ends: 50 [2020-07-21 01:40:51,172 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 01:40:51,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=139, Invalid=561, Unknown=2, NotChecked=0, Total=702 [2020-07-21 01:40:51,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 01:40:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-07-21 01:40:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 01:40:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-07-21 01:40:51,180 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2020-07-21 01:40:51,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:40:51,181 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-07-21 01:40:51,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-21 01:40:51,181 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-07-21 01:40:51,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 01:40:51,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:40:51,183 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] [2020-07-21 01:40:51,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:51,398 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:40:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:40:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash 531279049, now seen corresponding path program 2 times [2020-07-21 01:40:51,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:40:51,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512102826] [2020-07-21 01:40:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:51,451 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:40:51,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:40:51,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:40:51,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:40:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:51,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:40:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:51,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512102826] [2020-07-21 01:40:51,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:40:51,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-21 01:40:51,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494947093] [2020-07-21 01:40:51,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 01:40:51,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:40:51,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 01:40:51,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:40:51,565 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 9 states. [2020-07-21 01:40:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:40:51,792 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-07-21 01:40:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:40:51,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-07-21 01:40:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:40:51,798 INFO L225 Difference]: With dead ends: 45 [2020-07-21 01:40:51,798 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 01:40:51,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-07-21 01:40:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 01:40:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-07-21 01:40:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 01:40:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-21 01:40:51,810 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 28 [2020-07-21 01:40:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:40:51,810 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-21 01:40:51,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 01:40:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-21 01:40:51,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 01:40:51,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:40:51,812 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 01:40:52,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:52,028 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:40:52,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:40:52,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1018004383, now seen corresponding path program 3 times [2020-07-21 01:40:52,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:40:52,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26514496] [2020-07-21 01:40:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:52,079 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:40:52,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:40:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:40:52,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:40:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:52,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:40:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:40:52,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26514496] [2020-07-21 01:40:52,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:40:52,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-21 01:40:52,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534169714] [2020-07-21 01:40:52,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 01:40:52,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:40:52,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 01:40:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:40:52,235 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-07-21 01:40:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:40:52,413 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-07-21 01:40:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:40:52,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-21 01:40:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:40:52,416 INFO L225 Difference]: With dead ends: 49 [2020-07-21 01:40:52,416 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 01:40:52,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:40:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 01:40:52,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-07-21 01:40:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 01:40:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-21 01:40:52,426 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2020-07-21 01:40:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:40:52,427 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-21 01:40:52,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 01:40:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-21 01:40:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 01:40:52,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:40:52,428 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-07-21 01:40:52,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:52,644 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:40:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:40:52,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2056219107, now seen corresponding path program 4 times [2020-07-21 01:40:52,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:40:52,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997377375] [2020-07-21 01:40:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:52,711 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:40:52,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:40:52,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:40:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:40:52,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:40:52,767 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:40:52,768 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:40:52,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:40:53,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:40:53 BoogieIcfgContainer [2020-07-21 01:40:53,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:40:53,044 INFO L168 Benchmark]: Toolchain (without parser) took 9811.37 ms. Allocated memory was 138.4 MB in the beginning and 247.5 MB in the end (delta: 109.1 MB). Free memory was 103.8 MB in the beginning and 105.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 107.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:53,045 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 01:40:53,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.75 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 92.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:53,047 INFO L168 Benchmark]: Boogie Preprocessor took 169.82 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:53,048 INFO L168 Benchmark]: RCFGBuilder took 525.38 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 163.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:53,049 INFO L168 Benchmark]: TraceAbstraction took 8780.77 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 162.8 MB in the beginning and 105.8 MB in the end (delta: 56.9 MB). Peak memory consumption was 102.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:40:53,053 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 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.75 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 92.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.82 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 525.38 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 163.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8780.77 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 162.8 MB in the beginning and 105.8 MB in the end (delta: 56.9 MB). Peak memory consumption was 102.0 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)=9, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=2, sum={1144:0}] [L30] COND TRUE i