/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/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:47:51,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:47:51,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:47:51,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:47:51,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:47:51,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:47:51,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:47:51,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:47:51,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:47:51,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:47:51,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:47:51,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:47:51,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:47:51,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:47:51,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:47:51,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:47:51,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:47:51,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:47:51,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:47:51,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:47:51,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:47:51,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:47:51,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:47:51,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:47:51,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:47:51,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:47:51,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:47:51,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:47:51,200 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 01:47:51,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:47:51,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:47:51,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:47:51,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:47:51,233 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:47:51,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:47:51,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:47:51,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:47:51,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:47:51,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:47:51,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:47:51,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:47:51,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:47:51,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:47:51,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:47:51,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:47:51,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:47:51,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:47:51,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:47:51,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:47:51,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:47:51,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:47:51,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:47:51,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:47:51,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:47:51,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:47:51,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:47:51,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:47:51,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:47:51,239 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 01:47:51,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:47:51,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:47:51,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:47:51,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:47:51,571 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:47:51,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2020-07-20 01:47:51,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e36cbf5e/cbb3ae1ee2334c6cbaf2c92917ad259c/FLAGe9aeabf78 [2020-07-20 01:47:52,108 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:47:52,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c [2020-07-20 01:47:52,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e36cbf5e/cbb3ae1ee2334c6cbaf2c92917ad259c/FLAGe9aeabf78 [2020-07-20 01:47:52,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e36cbf5e/cbb3ae1ee2334c6cbaf2c92917ad259c [2020-07-20 01:47:52,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:47:52,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:47:52,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:52,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:47:52,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:47:52,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b7062e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52, skipping insertion in model container [2020-07-20 01:47:52,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:47:52,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:47:52,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:52,689 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:47:52,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:52,725 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:47:52,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52 WrapperNode [2020-07-20 01:47:52,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:52,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:47:52,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:47:52,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:47:52,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (1/1) ... [2020-07-20 01:47:52,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:47:52,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:47:52,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:47:52,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:47:52,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (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 01:47:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:47:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:47:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:47:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:47:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:47:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:47:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:47:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:47:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:47:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:47:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:47:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:47:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:47:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:47:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:47:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:47:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:47:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:47:53,182 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:47:53,182 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 01:47:53,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:53 BoogieIcfgContainer [2020-07-20 01:47:53,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:47:53,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:47:53,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:47:53,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:47:53,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:47:52" (1/3) ... [2020-07-20 01:47:53,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af2572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:53, skipping insertion in model container [2020-07-20 01:47:53,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:52" (2/3) ... [2020-07-20 01:47:53,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af2572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:53, skipping insertion in model container [2020-07-20 01:47:53,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:53" (3/3) ... [2020-07-20 01:47:53,196 INFO L109 eAbstractionObserver]: Analyzing ICFG sqmf.c [2020-07-20 01:47:53,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:47:53,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:47:53,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:47:53,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:47:53,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:47:53,275 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:47:53,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:47:53,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:47:53,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:47:53,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:47:53,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:47:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-20 01:47:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 01:47:53,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:53,311 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 01:47:53,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:53,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-20 01:47:53,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:53,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180018996] [2020-07-20 01:47:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25a822de [2020-07-20 01:47:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:53,536 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 01:47:53,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180018996] [2020-07-20 01:47:53,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:53,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:47:53,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192742747] [2020-07-20 01:47:53,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:47:53,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:53,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:47:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:47:53,565 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-20 01:47:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:53,695 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-20 01:47:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:47:53,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 01:47:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:53,708 INFO L225 Difference]: With dead ends: 58 [2020-07-20 01:47:53,708 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 01:47:53,712 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 01:47:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 01:47:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-20 01:47:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 01:47:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-20 01:47:53,759 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-20 01:47:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:53,760 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-20 01:47:53,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:47:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-20 01:47:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 01:47:53,761 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:53,762 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 01:47:53,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:47:53,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-20 01:47:53,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:53,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685706608] [2020-07-20 01:47:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@25a822de [2020-07-20 01:47:53,792 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:47:53,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500264012] [2020-07-20 01:47:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d37cdc6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:47:53,884 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d37cdc6 issued 4 check-sat command(s) [2020-07-20 01:47:53,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 01:47:53,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:47:53,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:53,934 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:47:53,934 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:47:54,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:47:54,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:47:54 BoogieIcfgContainer [2020-07-20 01:47:54,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:47:54,196 INFO L168 Benchmark]: Toolchain (without parser) took 1733.64 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 104.7 MB in the beginning and 119.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:54,197 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:47:54,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.00 ms. Allocated memory is still 146.8 MB. Free memory was 104.2 MB in the beginning and 93.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:54,199 INFO L168 Benchmark]: Boogie Preprocessor took 123.07 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.9 MB in the beginning and 181.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:54,200 INFO L168 Benchmark]: RCFGBuilder took 337.68 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 163.7 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:54,202 INFO L168 Benchmark]: TraceAbstraction took 1004.60 ms. Allocated memory is still 202.9 MB. Free memory was 163.0 MB in the beginning and 119.3 MB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:54,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.00 ms. Allocated memory is still 146.8 MB. Free memory was 104.2 MB in the beginning and 93.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.07 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.9 MB in the beginning and 181.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.68 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 163.7 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1004.60 ms. Allocated memory is still 202.9 MB. Free memory was 163.0 MB in the beginning and 119.3 MB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 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] b[0] = 0 [L30] a[0] = 0 [L32] i=1 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L32] COND FALSE !(i