/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 NUM_FUNCTIONS --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/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:39:10,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:39:10,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:39:10,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:39:10,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:39:10,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:39:10,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:39:10,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:39:10,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:39:10,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:39:10,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:39:10,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:39:10,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:39:10,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:39:10,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:39:10,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:39:10,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:39:10,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:39:10,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:39:10,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:39:10,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:39:10,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:39:10,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:39:10,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:39:10,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:39:10,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:39:10,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:39:10,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:39:10,752 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 [2020-07-19 23:39:10,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:39:10,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:39:10,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:39:10,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:39:10,775 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:39:10,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:39:10,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:39:10,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:39:10,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:39:10,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:39:10,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:39:10,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:39:10,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:39:10,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:39:10,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:39:10,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:39:10,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:39:10,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:39:10,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:39:10,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:39:10,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:39:10,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:39:10,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:39:10,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:39:10,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:39:10,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:39:10,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:39:10,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:39:10,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:39:10,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-19 23:39:11,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:39:11,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:39:11,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:39:11,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:39:11,206 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:39:11,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-19 23:39:11,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404f09cd6/a363431c727f4b2b9aa4138b530d6e0f/FLAGd09dc7c52 [2020-07-19 23:39:12,076 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:39:12,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-19 23:39:12,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404f09cd6/a363431c727f4b2b9aa4138b530d6e0f/FLAGd09dc7c52 [2020-07-19 23:39:12,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404f09cd6/a363431c727f4b2b9aa4138b530d6e0f [2020-07-19 23:39:12,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:39:12,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:39:12,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:39:12,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:39:12,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:39:12,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17dafbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12, skipping insertion in model container [2020-07-19 23:39:12,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:39:12,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:39:12,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:39:12,666 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:39:12,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:39:12,720 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:39:12,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12 WrapperNode [2020-07-19 23:39:12,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:39:12,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:39:12,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:39:12,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:39:12,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (1/1) ... [2020-07-19 23:39:12,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:39:12,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:39:12,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:39:12,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:39:12,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (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 [2020-07-19 23:39:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:39:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:39:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:39:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:39:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:39:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:39:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:39:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:39:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:39:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:39:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:39:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:39:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:39:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:39:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:39:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:39:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:39:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:39:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:39:13,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:39:13,302 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-19 23:39:13,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:39:13 BoogieIcfgContainer [2020-07-19 23:39:13,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:39:13,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:39:13,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:39:13,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:39:13,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:39:12" (1/3) ... [2020-07-19 23:39:13,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d04a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:39:13, skipping insertion in model container [2020-07-19 23:39:13,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:12" (2/3) ... [2020-07-19 23:39:13,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d04a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:39:13, skipping insertion in model container [2020-07-19 23:39:13,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:39:13" (3/3) ... [2020-07-19 23:39:13,317 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-07-19 23:39:13,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:39:13,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:39:13,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:39:13,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:39:13,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:39:13,444 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:39:13,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:39:13,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:39:13,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:39:13,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:39:13,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:39:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-19 23:39:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 23:39:13,483 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:13,485 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] [2020-07-19 23:39:13,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:13,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-07-19 23:39:13,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:13,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399495133] [2020-07-19 23:39:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f7b82ab [2020-07-19 23:39:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:13,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399495133] [2020-07-19 23:39:13,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:39:13,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:39:13,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302791559] [2020-07-19 23:39:13,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:39:13,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:39:13,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:39:13,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:39:13,795 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-19 23:39:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:39:13,952 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-19 23:39:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:39:13,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-19 23:39:13,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:39:13,967 INFO L225 Difference]: With dead ends: 64 [2020-07-19 23:39:13,968 INFO L226 Difference]: Without dead ends: 30 [2020-07-19 23:39:13,972 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 [2020-07-19 23:39:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-19 23:39:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-19 23:39:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-19 23:39:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-19 23:39:14,021 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-19 23:39:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:39:14,021 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-19 23:39:14,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:39:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-19 23:39:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 23:39:14,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:14,023 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] [2020-07-19 23:39:14,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:39:14,024 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-07-19 23:39:14,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:14,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389913269] [2020-07-19 23:39:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f7b82ab [2020-07-19 23:39:14,073 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:39:14,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542983097] [2020-07-19 23:39:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@37c89953 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:39:14,144 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@37c89953 issued 2 check-sat command(s) [2020-07-19 23:39:14,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:39:14,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-19 23:39:14,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:39:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:14,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389913269] [2020-07-19 23:39:14,205 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:39:14,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542983097] [2020-07-19 23:39:14,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:39:14,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:39:14,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530450853] [2020-07-19 23:39:14,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:39:14,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:39:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:39:14,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:39:14,209 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2020-07-19 23:39:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:39:14,290 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-19 23:39:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:39:14,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 23:39:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:39:14,293 INFO L225 Difference]: With dead ends: 53 [2020-07-19 23:39:14,293 INFO L226 Difference]: Without dead ends: 38 [2020-07-19 23:39:14,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:39:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-19 23:39:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-19 23:39:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-19 23:39:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-07-19 23:39:14,305 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-07-19 23:39:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:39:14,305 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-07-19 23:39:14,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:39:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-07-19 23:39:14,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-19 23:39:14,307 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:14,307 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] [2020-07-19 23:39:14,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:39:14,522 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:14,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-07-19 23:39:14,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:14,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637793556] [2020-07-19 23:39:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f7b82ab [2020-07-19 23:39:14,567 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:39:14,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057740862] [2020-07-19 23:39:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@643eda99 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:39:14,690 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@643eda99 issued 4 check-sat command(s) [2020-07-19 23:39:14,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-19 23:39:14,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:39:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:39:14,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:39:14,787 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:39:14,787 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:39:15,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:39:15,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:39:15 BoogieIcfgContainer [2020-07-19 23:39:15,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:39:15,060 INFO L168 Benchmark]: Toolchain (without parser) took 2766.65 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 101.1 MB in the beginning and 88.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:15,061 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 144.2 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 23:39:15,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.50 ms. Allocated memory is still 144.2 MB. Free memory was 100.7 MB in the beginning and 90.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:15,065 INFO L168 Benchmark]: Boogie Preprocessor took 181.16 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.0 MB in the beginning and 178.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:15,066 INFO L168 Benchmark]: RCFGBuilder took 396.97 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:15,066 INFO L168 Benchmark]: TraceAbstraction took 1747.47 ms. Allocated memory is still 201.3 MB. Free memory was 159.5 MB in the beginning and 88.3 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:15,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 144.2 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 426.50 ms. Allocated memory is still 144.2 MB. Free memory was 100.7 MB in the beginning and 90.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.16 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.0 MB in the beginning and 178.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.97 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1747.47 ms. Allocated memory is still 201.3 MB. Free memory was 159.5 MB in the beginning and 88.3 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 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)=4, 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