/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_VARIABLES --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/ifeqn5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:46:23,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:46:23,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:46:23,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:46:23,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:46:23,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:46:23,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:46:23,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:46:23,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:46:23,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:46:23,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:46:23,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:46:23,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:46:23,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:46:23,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:46:23,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:46:23,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:46:23,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:46:23,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:46:23,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:46:23,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:46:23,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:46:23,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:46:23,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:46:23,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:46:23,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:46:23,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:46:23,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:46:23,396 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 01:46:23,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:46:23,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:46:23,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:46:23,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:46:23,423 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:46:23,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:46:23,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:46:23,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:46:23,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:46:23,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:46:23,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:46:23,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:46:23,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:46:23,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:46:23,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:46:23,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:46:23,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:46:23,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:46:23,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:46:23,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:46:23,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:46:23,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:46:23,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:46:23,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:46:23,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:46:23,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:46:23,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:46:23,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:46:23,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:46:23,429 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_VARIABLES 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 01:46:23,699 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:46:23,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:46:23,716 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:46:23,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:46:23,718 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:46:23,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn5f.c [2020-07-20 01:46:23,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff19c0009/475929de7c1d42d18a684c427bd1e4eb/FLAG3571d222a [2020-07-20 01:46:24,215 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:46:24,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn5f.c [2020-07-20 01:46:24,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff19c0009/475929de7c1d42d18a684c427bd1e4eb/FLAG3571d222a [2020-07-20 01:46:24,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff19c0009/475929de7c1d42d18a684c427bd1e4eb [2020-07-20 01:46:24,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:46:24,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:46:24,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:46:24,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:46:24,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:46:24,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,598 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 01:46:24, skipping insertion in model container [2020-07-20 01:46:24,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:46:24,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:46:24,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:46:24,817 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:46:24,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:46:24,856 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:46:24,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24 WrapperNode [2020-07-20 01:46:24,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:46:24,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:46:24,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:46:24,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:46:24,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (1/1) ... [2020-07-20 01:46:24,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:46:24,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:46:24,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:46:24,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:46:24,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (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 01:46:25,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:46:25,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:46:25,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:46:25,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:46:25,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:46:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:46:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:46:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:46:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:46:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:46:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:46:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:46:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:46:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:46:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:46:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:46:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:46:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:46:25,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:46:25,441 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 01:46:25,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:46:25 BoogieIcfgContainer [2020-07-20 01:46:25,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:46:25,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:46:25,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:46:25,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:46:25,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:46:24" (1/3) ... [2020-07-20 01:46:25,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ac11ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:46:25, skipping insertion in model container [2020-07-20 01:46:25,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:24" (2/3) ... [2020-07-20 01:46:25,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ac11ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:46:25, skipping insertion in model container [2020-07-20 01:46:25,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:46:25" (3/3) ... [2020-07-20 01:46:25,455 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn5f.c [2020-07-20 01:46:25,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:46:25,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:46:25,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:46:25,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:46:25,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:46:25,517 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:46:25,517 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:46:25,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:46:25,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:46:25,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:46:25,518 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:46:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-20 01:46:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 01:46:25,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:25,545 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] [2020-07-20 01:46:25,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:25,550 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-07-20 01:46:25,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:25,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532252536] [2020-07-20 01:46:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15e1bf32 [2020-07-20 01:46:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:25,763 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 01:46:25,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532252536] [2020-07-20 01:46:25,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:46:25,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:46:25,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015821147] [2020-07-20 01:46:25,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:46:25,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:46:25,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:46:25,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:46:25,786 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-07-20 01:46:25,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:46:25,933 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-07-20 01:46:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:46:25,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 01:46:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:46:25,952 INFO L225 Difference]: With dead ends: 62 [2020-07-20 01:46:25,952 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 01:46:25,959 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 01:46:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 01:46:25,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-20 01:46:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 01:46:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-07-20 01:46:26,003 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-07-20 01:46:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:26,003 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-07-20 01:46:26,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:46:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-20 01:46:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 01:46:26,005 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:26,006 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] [2020-07-20 01:46:26,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:46:26,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2054124171, now seen corresponding path program 1 times [2020-07-20 01:46:26,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:26,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209294932] [2020-07-20 01:46:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15e1bf32 [2020-07-20 01:46:26,059 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:46:26,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733874356] [2020-07-20 01:46:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@37fd705d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:46:26,130 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@37fd705d issued 2 check-sat command(s) [2020-07-20 01:46:26,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:46:26,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 01:46:26,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:46:26,184 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 01:46:26,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209294932] [2020-07-20 01:46:26,185 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:46:26,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733874356] [2020-07-20 01:46:26,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:46:26,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:46:26,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435397896] [2020-07-20 01:46:26,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:46:26,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:46:26,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:46:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:46:26,189 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-07-20 01:46:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:46:26,275 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-07-20 01:46:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:46:26,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 01:46:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:46:26,278 INFO L225 Difference]: With dead ends: 56 [2020-07-20 01:46:26,279 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 01:46:26,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:46:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 01:46:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-07-20 01:46:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-20 01:46:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-20 01:46:26,294 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-07-20 01:46:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:26,295 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-20 01:46:26,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:46:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-20 01:46:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 01:46:26,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:26,296 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] [2020-07-20 01:46:26,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:46:26,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1477618916, now seen corresponding path program 1 times [2020-07-20 01:46:26,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:26,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309125611] [2020-07-20 01:46:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15e1bf32 [2020-07-20 01:46:26,552 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:46:26,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296656161] [2020-07-20 01:46:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26983586 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 [2020-07-20 01:46:26,639 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26983586 issued 4 check-sat command(s) [2020-07-20 01:46:26,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 01:46:26,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:46:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:46:26,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:46:26,705 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:46:26,706 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:46:26,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:46:26,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:46:26 BoogieIcfgContainer [2020-07-20 01:46:26,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:46:26,964 INFO L168 Benchmark]: Toolchain (without parser) took 2374.97 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 94.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:26,965 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:46:26,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.65 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:26,967 INFO L168 Benchmark]: Boogie Preprocessor took 130.02 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.1 MB in the beginning and 182.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:26,968 INFO L168 Benchmark]: RCFGBuilder took 458.23 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 164.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:26,969 INFO L168 Benchmark]: TraceAbstraction took 1513.92 ms. Allocated memory is still 203.9 MB. Free memory was 164.0 MB in the beginning and 94.9 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:26,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.65 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.02 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.1 MB in the beginning and 182.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.23 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 164.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1513.92 ms. Allocated memory is still 203.9 MB. Free memory was 164.0 MB in the beginning and 94.9 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 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)=2, 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1] [L29] COND TRUE i