./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sqm-iff.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/sqm-iff.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b7dbf2b758735ca828bdeb0a4be8028f901f3ac ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 14:57:16,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:57:16,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:57:16,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:57:16,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:57:16,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:57:16,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:57:16,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:57:16,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:57:16,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:57:16,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:57:16,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:57:16,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:57:16,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:57:16,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:57:16,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:57:16,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:57:16,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:57:16,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:57:16,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:57:16,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:57:16,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:57:16,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:57:16,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:57:16,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:57:16,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:57:16,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:57:16,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:57:16,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:57:16,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:57:16,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:57:16,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:57:16,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:57:16,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:57:16,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:57:16,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:57:16,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:57:16,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:57:16,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:57:16,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:57:16,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:57:16,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:57:16,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:57:16,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:57:16,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:57:16,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:57:16,613 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:57:16,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:57:16,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:57:16,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:57:16,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:57:16,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:57:16,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:57:16,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:57:16,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:57:16,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:57:16,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:57:16,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:57:16,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:57:16,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:57:16,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:57:16,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:57:16,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:57:16,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:57:16,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:57:16,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:57:16,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:57:16,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:57:16,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:57:16,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:57:16,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:57:16,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b7dbf2b758735ca828bdeb0a4be8028f901f3ac [2020-07-28 14:57:16,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:57:16,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:57:16,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:57:16,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:57:16,966 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:57:16,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sqm-iff.c [2020-07-28 14:57:17,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f520fc60/87d598d3547d454fbcfcf12145389639/FLAG32f7d25b7 [2020-07-28 14:57:17,504 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:57:17,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sqm-iff.c [2020-07-28 14:57:17,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f520fc60/87d598d3547d454fbcfcf12145389639/FLAG32f7d25b7 [2020-07-28 14:57:17,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f520fc60/87d598d3547d454fbcfcf12145389639 [2020-07-28 14:57:17,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:57:17,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:57:17,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:17,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:57:17,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:57:17,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:17" (1/1) ... [2020-07-28 14:57:17,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7de9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:17, skipping insertion in model container [2020-07-28 14:57:17,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:17" (1/1) ... [2020-07-28 14:57:17,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:57:17,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:57:18,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:18,065 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:57:18,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:18,108 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:57:18,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18 WrapperNode [2020-07-28 14:57:18,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:18,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:18,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:57:18,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:57:18,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:18,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:57:18,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:57:18,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:57:18,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (1/1) ... [2020-07-28 14:57:18,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:57:18,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:57:18,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:57:18,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:57:18,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (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 [2020-07-28 14:57:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:57:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:57:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:57:18,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:57:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:57:18,714 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:57:18,714 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-28 14:57:18,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:18 BoogieIcfgContainer [2020-07-28 14:57:18,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:57:18,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:57:18,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:57:18,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:57:18,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:57:17" (1/3) ... [2020-07-28 14:57:18,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e377dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:18, skipping insertion in model container [2020-07-28 14:57:18,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:18" (2/3) ... [2020-07-28 14:57:18,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e377dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:18, skipping insertion in model container [2020-07-28 14:57:18,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:18" (3/3) ... [2020-07-28 14:57:18,730 INFO L109 eAbstractionObserver]: Analyzing ICFG sqm-iff.c [2020-07-28 14:57:18,743 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:57:18,752 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:57:18,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:57:18,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:57:18,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:57:18,798 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:57:18,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:57:18,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:57:18,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:57:18,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:57:18,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:57:18,817 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-28 14:57:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 14:57:18,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:18,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:57:18,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2020-07-28 14:57:18,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:18,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072650077] [2020-07-28 14:57:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:18,990 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {26#true} is VALID [2020-07-28 14:57:18,991 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~mem7, main_#t~post5, main_#t~mem9, main_#t~post8, main_~i~0, main_~a~0.base, main_~a~0.offset, main_~b~0.base, main_~b~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {26#true} is VALID [2020-07-28 14:57:18,991 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {26#true} is VALID [2020-07-28 14:57:18,993 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume 0 == assume_abort_if_not_~cond;assume false; {27#false} is VALID [2020-07-28 14:57:18,993 INFO L280 TraceCheckUtils]: 4: Hoare triple {27#false} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~b~0.base, main_~b~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;main_~i~0 := 0; {27#false} is VALID [2020-07-28 14:57:18,994 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#false} assume !(main_~i~0 < ~N~0); {27#false} is VALID [2020-07-28 14:57:18,994 INFO L280 TraceCheckUtils]: 6: Hoare triple {27#false} main_~i~0 := 0; {27#false} is VALID [2020-07-28 14:57:18,994 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#false} assume !true; {27#false} is VALID [2020-07-28 14:57:18,995 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#false} main_~i~0 := 0; {27#false} is VALID [2020-07-28 14:57:18,995 INFO L280 TraceCheckUtils]: 9: Hoare triple {27#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem9 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem9 == main_~i~0 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {27#false} is VALID [2020-07-28 14:57:18,995 INFO L280 TraceCheckUtils]: 10: Hoare triple {27#false} assume 0 == __VERIFIER_assert_~cond; {27#false} is VALID [2020-07-28 14:57:18,996 INFO L280 TraceCheckUtils]: 11: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-28 14:57:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:57:19,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072650077] [2020-07-28 14:57:19,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:19,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:57:19,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067059841] [2020-07-28 14:57:19,010 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-28 14:57:19,011 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:19,014 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:57:19,077 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:19,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:57:19,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:19,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:57:19,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:57:19,089 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-28 14:57:19,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:19,157 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2020-07-28 14:57:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:57:19,158 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-28 14:57:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2020-07-28 14:57:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2020-07-28 14:57:19,174 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 60 transitions. [2020-07-28 14:57:19,279 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:19,292 INFO L225 Difference]: With dead ends: 42 [2020-07-28 14:57:19,292 INFO L226 Difference]: Without dead ends: 19 [2020-07-28 14:57:19,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:57:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-28 14:57:19,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-28 14:57:19,335 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:19,336 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-28 14:57:19,337 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-28 14:57:19,337 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-28 14:57:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:19,341 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-07-28 14:57:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-07-28 14:57:19,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:19,342 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:19,342 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-28 14:57:19,343 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-28 14:57:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:19,346 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-07-28 14:57:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-07-28 14:57:19,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:19,347 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:19,347 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:19,347 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-28 14:57:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-07-28 14:57:19,352 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-07-28 14:57:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:19,353 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-07-28 14:57:19,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:57:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-07-28 14:57:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 14:57:19,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:19,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:57:19,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:57:19,356 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:19,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:19,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2020-07-28 14:57:19,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:19,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007091658] [2020-07-28 14:57:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:19,479 INFO L280 TraceCheckUtils]: 0: Hoare triple {140#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {140#true} is VALID [2020-07-28 14:57:19,479 INFO L280 TraceCheckUtils]: 1: Hoare triple {140#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~mem7, main_#t~post5, main_#t~mem9, main_#t~post8, main_~i~0, main_~a~0.base, main_~a~0.offset, main_~b~0.base, main_~b~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {140#true} is VALID [2020-07-28 14:57:19,483 INFO L280 TraceCheckUtils]: 2: Hoare triple {140#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {142#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:19,485 INFO L280 TraceCheckUtils]: 3: Hoare triple {142#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {142#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:19,487 INFO L280 TraceCheckUtils]: 4: Hoare triple {142#(<= 1 ~N~0)} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~b~0.base, main_~b~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;main_~i~0 := 0; {143#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:57:19,492 INFO L280 TraceCheckUtils]: 5: Hoare triple {143#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {141#false} is VALID [2020-07-28 14:57:19,492 INFO L280 TraceCheckUtils]: 6: Hoare triple {141#false} main_~i~0 := 0; {141#false} is VALID [2020-07-28 14:57:19,492 INFO L280 TraceCheckUtils]: 7: Hoare triple {141#false} assume !(main_~i~0 < ~N~0); {141#false} is VALID [2020-07-28 14:57:19,493 INFO L280 TraceCheckUtils]: 8: Hoare triple {141#false} main_~i~0 := 0; {141#false} is VALID [2020-07-28 14:57:19,493 INFO L280 TraceCheckUtils]: 9: Hoare triple {141#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem9 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem9 == main_~i~0 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {141#false} is VALID [2020-07-28 14:57:19,493 INFO L280 TraceCheckUtils]: 10: Hoare triple {141#false} assume 0 == __VERIFIER_assert_~cond; {141#false} is VALID [2020-07-28 14:57:19,494 INFO L280 TraceCheckUtils]: 11: Hoare triple {141#false} assume !false; {141#false} is VALID [2020-07-28 14:57:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:57:19,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007091658] [2020-07-28 14:57:19,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:19,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:57:19,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375428233] [2020-07-28 14:57:19,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-28 14:57:19,502 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:19,506 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:57:19,532 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:19,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:57:19,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:19,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:57:19,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:57:19,534 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2020-07-28 14:57:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:19,736 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2020-07-28 14:57:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:57:19,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-28 14:57:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2020-07-28 14:57:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2020-07-28 14:57:19,742 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 57 transitions. [2020-07-28 14:57:19,832 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:19,834 INFO L225 Difference]: With dead ends: 45 [2020-07-28 14:57:19,835 INFO L226 Difference]: Without dead ends: 31 [2020-07-28 14:57:19,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:57:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-28 14:57:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-07-28 14:57:19,852 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:19,852 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 23 states. [2020-07-28 14:57:19,852 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 23 states. [2020-07-28 14:57:19,853 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 23 states. [2020-07-28 14:57:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:19,856 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-28 14:57:19,856 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-28 14:57:19,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:19,857 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:19,857 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 31 states. [2020-07-28 14:57:19,858 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 31 states. [2020-07-28 14:57:19,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:19,861 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-28 14:57:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-28 14:57:19,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:19,862 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:19,862 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:19,863 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-28 14:57:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-28 14:57:19,865 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-07-28 14:57:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:19,866 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-28 14:57:19,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:57:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-28 14:57:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-28 14:57:19,867 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:19,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:57:19,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:57:19,868 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:19,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2020-07-28 14:57:19,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:19,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834157263] [2020-07-28 14:57:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:19,897 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-28 14:57:19,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033083742] [2020-07-28 14:57:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-28 14:57:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:19,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:19,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:19,997 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:57:19,997 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:57:20,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-28 14:57:20,277 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:57:20,278 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:57:20,278 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:20,278 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:20,278 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-28 14:57:20,279 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:20,279 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:20,279 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:57:20,279 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:57:20,279 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-28 14:57:20,280 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-28 14:57:20,280 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-28 14:57:20,280 WARN L170 areAnnotationChecker]: L29-4 has no Hoare annotation [2020-07-28 14:57:20,280 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 14:57:20,281 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 14:57:20,281 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:57:20,281 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:57:20,281 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:57:20,282 WARN L170 areAnnotationChecker]: L29-2 has no Hoare annotation [2020-07-28 14:57:20,282 WARN L170 areAnnotationChecker]: L38-4 has no Hoare annotation [2020-07-28 14:57:20,282 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-28 14:57:20,282 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-28 14:57:20,283 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-28 14:57:20,283 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-28 14:57:20,283 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-28 14:57:20,283 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 14:57:20,283 WARN L170 areAnnotationChecker]: L47-4 has no Hoare annotation [2020-07-28 14:57:20,284 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:20,284 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:20,284 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:20,285 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:20,285 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:57:20,285 WARN L170 areAnnotationChecker]: L47-2 has no Hoare annotation [2020-07-28 14:57:20,285 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 14:57:20,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:57:20 BoogieIcfgContainer [2020-07-28 14:57:20,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:57:20,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:57:20,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:57:20,290 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:57:20,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:18" (3/4) ... [2020-07-28 14:57:20,294 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:57:20,363 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:57:20,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:57:20,367 INFO L168 Benchmark]: Toolchain (without parser) took 2552.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 960.2 MB in the beginning and 981.6 MB in the end (delta: -21.3 MB). Peak memory consumption was 117.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:20,368 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:57:20,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.05 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:20,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:20,371 INFO L168 Benchmark]: Boogie Preprocessor took 34.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:20,372 INFO L168 Benchmark]: RCFGBuilder took 465.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:20,372 INFO L168 Benchmark]: TraceAbstraction took 1567.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.2 MB in the end (delta: 113.1 MB). Peak memory consumption was 113.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:20,373 INFO L168 Benchmark]: Witness Printer took 74.62 ms. Allocated memory is still 1.2 GB. Free memory was 988.2 MB in the beginning and 981.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:20,377 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.05 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 109.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 465.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1567.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.2 MB in the end (delta: 113.1 MB). Peak memory consumption was 113.1 MB. Max. memory is 11.5 GB. * Witness Printer took 74.62 ms. Allocated memory is still 1.2 GB. Free memory was 988.2 MB in the beginning and 981.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 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 [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [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 [N=1] [L29] COND TRUE i