/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:56:52,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:56:52,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:56:52,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:56:52,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:56:52,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:56:52,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:56:52,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:56:52,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:56:52,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:56:52,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:56:52,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:56:52,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:56:52,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:56:52,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:56:52,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:56:52,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:56:52,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:56:52,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:56:52,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:56:52,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:56:52,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:56:52,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:56:52,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:56:52,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:56:52,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:56:52,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:56:52,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:56:52,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 03:56:52,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:56:52,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:56:52,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:56:52,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:56:52,633 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:56:52,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:56:52,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:56:52,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:56:52,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:56:52,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:56:52,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:56:52,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:56:52,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:56:52,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:56:52,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:56:52,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:56:52,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:56:52,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:56:52,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:56:52,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:56:52,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:56:52,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:56:52,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:56:52,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:56:52,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:56:52,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:56:52,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:56:52,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:56:52,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:56:52,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:56:52,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:56:53,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:56:53,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:56:53,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:56:53,015 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:56:53,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-07-20 03:56:53,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0b51896/287540c68d9f48808f3ff90fb45f144c/FLAGe20e74d5d [2020-07-20 03:56:53,649 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:56:53,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c [2020-07-20 03:56:53,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0b51896/287540c68d9f48808f3ff90fb45f144c/FLAGe20e74d5d [2020-07-20 03:56:54,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0b51896/287540c68d9f48808f3ff90fb45f144c [2020-07-20 03:56:54,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:56:54,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:56:54,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:56:54,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:56:54,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:56:54,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af4a478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54, skipping insertion in model container [2020-07-20 03:56:54,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:56:54,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:56:54,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:56:54,320 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:56:54,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:56:54,466 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:56:54,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54 WrapperNode [2020-07-20 03:56:54,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:56:54,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:56:54,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:56:54,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:56:54,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (1/1) ... [2020-07-20 03:56:54,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:56:54,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:56:54,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:56:54,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:56:54,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (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 03:56:54,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:56:54,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:56:54,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 03:56:54,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 03:56:54,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:56:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:56:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:56:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 03:56:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 03:56:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:56:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:56:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:56:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:56:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:56:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:56:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:56:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:56:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:56:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:56:54,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:56:54,960 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 03:56:54,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:56:54 BoogieIcfgContainer [2020-07-20 03:56:54,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:56:54,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:56:54,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:56:54,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:56:54,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:56:54" (1/3) ... [2020-07-20 03:56:54,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720297af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:56:54, skipping insertion in model container [2020-07-20 03:56:54,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:54" (2/3) ... [2020-07-20 03:56:54,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720297af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:56:54, skipping insertion in model container [2020-07-20 03:56:54,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:56:54" (3/3) ... [2020-07-20 03:56:54,983 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-07-20 03:56:55,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:56:55,016 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:56:55,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:56:55,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:56:55,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:56:55,093 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:56:55,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:56:55,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:56:55,094 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:56:55,094 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:56:55,094 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:56:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 03:56:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:56:55,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:56:55,141 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] [2020-07-20 03:56:55,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:56:55,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:56:55,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-07-20 03:56:55,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:56:55,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483978901] [2020-07-20 03:56:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b47d3e2 [2020-07-20 03:56:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:56:55,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483978901] [2020-07-20 03:56:55,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:56:55,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:56:55,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989345237] [2020-07-20 03:56:55,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:56:55,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:56:55,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:56:55,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:56:55,431 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-20 03:56:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:56:55,594 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-20 03:56:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:56:55,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 03:56:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:56:55,609 INFO L225 Difference]: With dead ends: 64 [2020-07-20 03:56:55,609 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 03:56:55,614 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 03:56:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 03:56:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 03:56:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 03:56:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 03:56:55,673 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-20 03:56:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:56:55,674 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 03:56:55,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:56:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 03:56:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:56:55,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:56:55,676 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] [2020-07-20 03:56:55,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:56:55,677 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:56:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:56:55,678 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-07-20 03:56:55,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:56:55,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989854154] [2020-07-20 03:56:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b47d3e2 [2020-07-20 03:56:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:56:55,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989854154] [2020-07-20 03:56:55,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:56:55,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:56:55,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470365843] [2020-07-20 03:56:55,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:56:55,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:56:55,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:56:55,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:56:55,843 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-07-20 03:56:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:56:56,018 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-20 03:56:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:56:56,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-20 03:56:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:56:56,021 INFO L225 Difference]: With dead ends: 53 [2020-07-20 03:56:56,021 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 03:56:56,024 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 03:56:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 03:56:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-20 03:56:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-20 03:56:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-07-20 03:56:56,036 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-07-20 03:56:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:56:56,037 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-07-20 03:56:56,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:56:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-07-20 03:56:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 03:56:56,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:56:56,039 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] [2020-07-20 03:56:56,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:56:56,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:56:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:56:56,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-07-20 03:56:56,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:56:56,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220797668] [2020-07-20 03:56:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b47d3e2 [2020-07-20 03:56:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:56:56,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:56:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:56:56,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:56:56,301 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:56:56,301 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:56:56,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:56:56,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:56:56 BoogieIcfgContainer [2020-07-20 03:56:56,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:56:56,360 INFO L168 Benchmark]: Toolchain (without parser) took 2307.61 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 100.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:56,361 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 146.3 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 03:56:56,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.27 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 182.5 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:56,363 INFO L168 Benchmark]: Boogie Preprocessor took 67.86 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 180.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:56,364 INFO L168 Benchmark]: RCFGBuilder took 433.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 162.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:56,365 INFO L168 Benchmark]: TraceAbstraction took 1383.34 ms. Allocated memory is still 203.9 MB. Free memory was 161.6 MB in the beginning and 100.3 MB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:56,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 146.3 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.27 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 182.5 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.86 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 180.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 162.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1383.34 ms. Allocated memory is still 203.9 MB. Free memory was 161.6 MB in the beginning and 100.3 MB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 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)=10, 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] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] COND TRUE i