/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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:06:06,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:06:06,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:06:06,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:06:06,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:06:06,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:06:06,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:06:06,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:06:06,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:06:06,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:06:06,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:06:06,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:06:06,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:06:06,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:06:06,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:06:06,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:06:06,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:06:06,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:06:06,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:06:06,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:06:06,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:06:06,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:06:06,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:06:06,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:06:06,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 06:06:06,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 06:06:06,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 06:06:06,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 06:06:06,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 06:06:06,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 06:06:06,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 06:06:06,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 06:06:06,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 06:06:06,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 06:06:06,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 06:06:06,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 06:06:06,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 06:06:06,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 06:06:06,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:06:06,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:06:06,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:06:06,565 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 06:06:06,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:06:06,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:06:06,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:06:06,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:06:06,585 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:06:06,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:06:06,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:06:06,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:06:06,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:06:06,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:06:06,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:06:06,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:06:06,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:06:06,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:06:06,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:06:06,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:06:06,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:06:06,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:06:06,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:06:06,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:06:06,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:06:06,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:06:06,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:06:06,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:06:06,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:06:06,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:06:06,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:06:06,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:06:06,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:06:06,590 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 06:06:06,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:06:06,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:06:06,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:06:06,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:06:06,907 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:06:06,908 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-20 06:06:06,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d074d0db/cd1a3092a2b849e482abd074ad561aa4/FLAG320290e66 [2020-07-20 06:06:07,448 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:06:07,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-20 06:06:07,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d074d0db/cd1a3092a2b849e482abd074ad561aa4/FLAG320290e66 [2020-07-20 06:06:07,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d074d0db/cd1a3092a2b849e482abd074ad561aa4 [2020-07-20 06:06:07,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:06:07,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:06:07,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:06:07,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:06:07,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:06:07,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:06:07" (1/1) ... [2020-07-20 06:06:07,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a20de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:07, skipping insertion in model container [2020-07-20 06:06:07,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:06:07" (1/1) ... [2020-07-20 06:06:07,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:06:07,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:06:08,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:06:08,166 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:06:08,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:06:08,298 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:06:08,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08 WrapperNode [2020-07-20 06:06:08,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:06:08,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:06:08,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:06:08,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:06:08,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (1/1) ... [2020-07-20 06:06:08,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (1/1) ... [2020-07-20 06:06:08,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (1/1) ... [2020-07-20 06:06:08,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (1/1) ... [2020-07-20 06:06:08,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (1/1) ... [2020-07-20 06:06:08,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (1/1) ... [2020-07-20 06:06:08,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (1/1) ... [2020-07-20 06:06:08,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:06:08,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:06:08,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:06:08,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:06:08,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (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 06:06:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:06:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:06:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:06:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:06:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:06:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:06:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:06:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:06:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:06:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:06:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 06:06:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:06:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:06:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 06:06:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:06:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:06:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:06:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:06:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:06:08,777 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:06:08,777 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 06:06:08,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:06:08 BoogieIcfgContainer [2020-07-20 06:06:08,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:06:08,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:06:08,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:06:08,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:06:08,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:06:07" (1/3) ... [2020-07-20 06:06:08,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a21c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:06:08, skipping insertion in model container [2020-07-20 06:06:08,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:08" (2/3) ... [2020-07-20 06:06:08,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a21c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:06:08, skipping insertion in model container [2020-07-20 06:06:08,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:06:08" (3/3) ... [2020-07-20 06:06:08,793 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-07-20 06:06:08,808 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:06:08,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:06:08,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:06:08,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:06:08,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:06:08,873 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:06:08,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:06:08,873 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:06:08,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:06:08,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:06:08,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:06:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-07-20 06:06:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 06:06:08,900 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:08,901 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, 1, 1, 1] [2020-07-20 06:06:08,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:08,908 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-07-20 06:06:08,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:08,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046644678] [2020-07-20 06:06:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7539a7b4 [2020-07-20 06:06:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:09,130 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 06:06:09,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046644678] [2020-07-20 06:06:09,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:06:09,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:06:09,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167863178] [2020-07-20 06:06:09,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:06:09,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:06:09,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:06:09,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:06:09,166 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-07-20 06:06:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:06:09,392 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-07-20 06:06:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:06:09,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 06:06:09,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:06:09,412 INFO L225 Difference]: With dead ends: 82 [2020-07-20 06:06:09,413 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 06:06:09,421 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 06:06:09,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 06:06:09,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 06:06:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 06:06:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-20 06:06:09,471 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-07-20 06:06:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:06:09,472 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-20 06:06:09,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:06:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-20 06:06:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 06:06:09,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:09,474 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, 1, 1, 1] [2020-07-20 06:06:09,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:06:09,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:09,476 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-07-20 06:06:09,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:09,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575385193] [2020-07-20 06:06:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7539a7b4 [2020-07-20 06:06:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:09,627 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 06:06:09,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575385193] [2020-07-20 06:06:09,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:06:09,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:06:09,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570675547] [2020-07-20 06:06:09,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:06:09,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:06:09,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:06:09,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:06:09,631 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-07-20 06:06:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:06:09,866 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-07-20 06:06:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:06:09,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 06:06:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:06:09,871 INFO L225 Difference]: With dead ends: 83 [2020-07-20 06:06:09,871 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 06:06:09,872 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 06:06:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 06:06:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-07-20 06:06:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 06:06:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-07-20 06:06:09,890 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-07-20 06:06:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:06:09,891 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-07-20 06:06:09,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:06:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-20 06:06:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 06:06:09,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:09,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:06:09,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:06:09,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:09,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-07-20 06:06:09,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:09,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902563289] [2020-07-20 06:06:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7539a7b4 [2020-07-20 06:06:09,936 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:06:09,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658418245] [2020-07-20 06:06:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6ca29b86 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 06:06:10,157 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6ca29b86 issued 4 check-sat command(s) [2020-07-20 06:06:10,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 06:06:10,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:06:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:06:10,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:06:10,230 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 06:06:10,230 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 06:06:10,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 06:06:10,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:06:10 BoogieIcfgContainer [2020-07-20 06:06:10,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:06:10,488 INFO L168 Benchmark]: Toolchain (without parser) took 2614.82 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 101.9 MB in the beginning and 187.7 MB in the end (delta: -85.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:10,489 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 06:06:10,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.05 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 180.9 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:10,491 INFO L168 Benchmark]: Boogie Preprocessor took 50.19 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 178.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:10,492 INFO L168 Benchmark]: RCFGBuilder took 432.63 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 158.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:10,493 INFO L168 Benchmark]: TraceAbstraction took 1701.53 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.3 MB in the beginning and 187.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:10,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 424.05 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 101.4 MB in the beginning and 180.9 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.19 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 178.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.63 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 158.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1701.53 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.3 MB in the beginning and 187.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 3.6 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)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i