/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:53,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:53,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:53,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:53,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:53,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:53,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:53,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:53,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:53,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:53,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:53,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:53,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:53,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:53,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:53,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:53,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:53,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:53,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:53,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:53,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:53,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:53,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:53,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:53,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:53,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:53,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:53,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:53,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:53,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:53,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:53,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:53,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:53,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:53,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:53,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:53,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:42:53,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:53,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:53,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:53,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:53,680 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:53,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:53,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:53,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:53,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:53,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:53,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:53,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:53,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:53,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:53,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:53,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:53,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:53,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:53,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:53,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:53,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:53,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:53,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:53,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:53,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:53,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:53,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:53,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:53,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:53,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:54,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:54,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:54,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:54,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:54,136 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:54,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2020-09-04 13:42:54,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bdc4a9b1/9b75f1f05544496c80df70debe00800b/FLAGf725b3ea9 [2020-09-04 13:42:54,739 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:54,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sqmf.c [2020-09-04 13:42:54,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bdc4a9b1/9b75f1f05544496c80df70debe00800b/FLAGf725b3ea9 [2020-09-04 13:42:55,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bdc4a9b1/9b75f1f05544496c80df70debe00800b [2020-09-04 13:42:55,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:55,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:55,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:55,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:55,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:55,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55, skipping insertion in model container [2020-09-04 13:42:55,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:55,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:55,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:55,348 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:55,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:55,392 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:55,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55 WrapperNode [2020-09-04 13:42:55,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:55,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:55,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:55,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:55,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... [2020-09-04 13:42:55,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:55,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:55,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:55,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:55,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:55,913 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:55,914 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 13:42:55,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:55 BoogieIcfgContainer [2020-09-04 13:42:55,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:55,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:55,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:55,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:55,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:55" (1/3) ... [2020-09-04 13:42:55,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1fea01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:55, skipping insertion in model container [2020-09-04 13:42:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:55" (2/3) ... [2020-09-04 13:42:55,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1fea01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:55, skipping insertion in model container [2020-09-04 13:42:55,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:55" (3/3) ... [2020-09-04 13:42:55,929 INFO L109 eAbstractionObserver]: Analyzing ICFG sqmf.c [2020-09-04 13:42:55,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:55,951 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:55,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:56,009 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:56,009 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:56,009 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:56,009 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:56,009 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:56,010 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:56,010 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:56,010 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-04 13:42:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:42:56,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:56,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:56,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:56,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-09-04 13:42:56,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:56,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055019407] [2020-09-04 13:42:56,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:56,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:56,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055019407] [2020-09-04 13:42:56,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:56,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:56,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109571990] [2020-09-04 13:42:56,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:56,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:56,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:56,342 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-04 13:42:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:56,462 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-09-04 13:42:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:56,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-04 13:42:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:56,475 INFO L225 Difference]: With dead ends: 58 [2020-09-04 13:42:56,475 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 13:42:56,480 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 [2020-09-04 13:42:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 13:42:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-04 13:42:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:42:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-09-04 13:42:56,530 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-09-04 13:42:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:56,531 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-09-04 13:42:56,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-09-04 13:42:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:42:56,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:56,533 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] [2020-09-04 13:42:56,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:56,533 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-09-04 13:42:56,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:56,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483169457] [2020-09-04 13:42:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:56,564 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:56,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369782893] [2020-09-04 13:42:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:56,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:56,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:56,675 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:56,675 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:56,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:42:56,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:56 BoogieIcfgContainer [2020-09-04 13:42:56,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:56,935 INFO L168 Benchmark]: Toolchain (without parser) took 1855.33 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 104.6 MB in the beginning and 121.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,936 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:56,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.65 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 93.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,938 INFO L168 Benchmark]: Boogie Preprocessor took 131.08 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 182.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,939 INFO L168 Benchmark]: RCFGBuilder took 393.91 ms. Allocated memory is still 205.0 MB. Free memory was 182.8 MB in the beginning and 165.5 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,941 INFO L168 Benchmark]: TraceAbstraction took 1011.55 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 121.8 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,945 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.65 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 93.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.08 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 182.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.91 ms. Allocated memory is still 205.0 MB. Free memory was 182.8 MB in the beginning and 165.5 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1011.55 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 121.8 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 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)=3, 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={-2:0}, b={-1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L32] COND FALSE !(i