/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:04:53,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:04:53,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:04:53,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:04:53,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:04:53,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:04:53,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:04:53,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:04:53,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:04:53,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:04:53,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:04:53,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:04:53,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:04:53,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:04:53,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:04:53,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:04:53,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:04:53,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:04:53,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:04:53,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:04:53,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:04:53,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:04:53,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:04:53,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:04:53,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 06:04:53,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 06:04:53,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 06:04:53,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 06:04:53,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 06:04:53,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 06:04:53,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 06:04:53,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 06:04:53,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 06:04:53,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 06:04:53,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 06:04:53,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 06:04:53,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 06:04:53,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 06:04:53,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:04:53,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:04:53,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:04:53,093 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 06:04:53,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:04:53,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:04:53,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:04:53,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:04:53,110 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:04:53,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:04:53,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:04:53,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:04:53,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:04:53,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:04:53,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:04:53,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:04:53,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:04:53,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:04:53,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:04:53,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:04:53,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:04:53,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:04:53,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:04:53,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:04:53,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:04:53,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:04:53,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:04:53,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:04:53,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:04:53,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:04:53,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:04:53,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:04:53,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:04:53,115 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 06:04:53,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:04:53,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:04:53,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:04:53,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:04:53,425 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:04:53,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-07-20 06:04:53,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91c39d0b8/32996e20fc174a96bbfcdfb1656977c9/FLAGc85894ebb [2020-07-20 06:04:53,929 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:04:53,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2020-07-20 06:04:53,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91c39d0b8/32996e20fc174a96bbfcdfb1656977c9/FLAGc85894ebb [2020-07-20 06:04:54,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91c39d0b8/32996e20fc174a96bbfcdfb1656977c9 [2020-07-20 06:04:54,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:04:54,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:04:54,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:04:54,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:04:54,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:04:54,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d600934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54, skipping insertion in model container [2020-07-20 06:04:54,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:04:54,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:04:54,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:04:54,554 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:04:54,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:04:54,595 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:04:54,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54 WrapperNode [2020-07-20 06:04:54,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:04:54,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:04:54,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:04:54,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:04:54,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (1/1) ... [2020-07-20 06:04:54,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:04:54,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:04:54,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:04:54,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:04:54,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (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 06:04:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:04:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:04:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:04:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:04:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:04:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:04:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:04:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:04:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:04:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:04:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 06:04:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:04:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:04:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 06:04:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:04:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:04:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:04:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:04:54,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:04:55,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:04:55,368 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 06:04:55,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:04:55 BoogieIcfgContainer [2020-07-20 06:04:55,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:04:55,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:04:55,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:04:55,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:04:55,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:04:54" (1/3) ... [2020-07-20 06:04:55,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c08316b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:04:55, skipping insertion in model container [2020-07-20 06:04:55,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:04:54" (2/3) ... [2020-07-20 06:04:55,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c08316b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:04:55, skipping insertion in model container [2020-07-20 06:04:55,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:04:55" (3/3) ... [2020-07-20 06:04:55,383 INFO L109 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-07-20 06:04:55,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:04:55,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:04:55,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:04:55,458 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:04:55,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:04:55,459 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:04:55,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:04:55,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:04:55,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:04:55,462 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:04:55,462 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:04:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-20 06:04:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 06:04:55,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:55,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:04:55,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:55,503 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-07-20 06:04:55,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:55,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067768131] [2020-07-20 06:04:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e006e8b [2020-07-20 06:04:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:55,718 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 06:04:55,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067768131] [2020-07-20 06:04:55,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:04:55,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:04:55,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897945867] [2020-07-20 06:04:55,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:04:55,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:04:55,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:04:55,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:04:55,743 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-20 06:04:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:04:55,847 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-07-20 06:04:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:04:55,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 06:04:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:04:55,859 INFO L225 Difference]: With dead ends: 54 [2020-07-20 06:04:55,860 INFO L226 Difference]: Without dead ends: 25 [2020-07-20 06:04:55,864 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 06:04:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-20 06:04:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-20 06:04:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 06:04:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-07-20 06:04:55,907 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-07-20 06:04:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:04:55,908 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-07-20 06:04:55,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:04:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-07-20 06:04:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 06:04:55,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:55,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:04:55,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:04:55,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-07-20 06:04:55,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:55,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367855053] [2020-07-20 06:04:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e006e8b [2020-07-20 06:04:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:04:56,055 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 06:04:56,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367855053] [2020-07-20 06:04:56,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:04:56,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:04:56,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105463506] [2020-07-20 06:04:56,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:04:56,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:04:56,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:04:56,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:04:56,060 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-07-20 06:04:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:04:56,238 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-07-20 06:04:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:04:56,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-20 06:04:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:04:56,241 INFO L225 Difference]: With dead ends: 40 [2020-07-20 06:04:56,241 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 06:04:56,243 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 06:04:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 06:04:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-07-20 06:04:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 06:04:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-20 06:04:56,262 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-07-20 06:04:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:04:56,263 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-20 06:04:56,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:04:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-20 06:04:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 06:04:56,267 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:56,268 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] [2020-07-20 06:04:56,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:04:56,269 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:56,270 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-07-20 06:04:56,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:56,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917271465] [2020-07-20 06:04:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e006e8b [2020-07-20 06:04:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:04:56,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:04:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:04:56,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:04:56,398 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 06:04:56,398 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 06:04:56,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:04:56,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:04:56 BoogieIcfgContainer [2020-07-20 06:04:56,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:04:56,455 INFO L168 Benchmark]: Toolchain (without parser) took 2126.20 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.8 MB in the beginning and 110.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:56,456 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 06:04:56,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.40 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 91.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:56,459 INFO L168 Benchmark]: Boogie Preprocessor took 166.33 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.6 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:56,459 INFO L168 Benchmark]: RCFGBuilder took 608.25 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 164.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:56,460 INFO L168 Benchmark]: TraceAbstraction took 1077.39 ms. Allocated memory is still 203.4 MB. Free memory was 163.9 MB in the beginning and 110.0 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:56,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.40 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 91.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.33 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.6 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 608.25 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 164.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1077.39 ms. Allocated memory is still 203.4 MB. Free memory was 163.9 MB in the beginning and 110.0 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 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)=6, 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i