/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.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:45:06,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:45:06,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:45:06,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:45:06,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:45:06,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:45:06,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:45:06,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:45:06,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:45:06,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:45:06,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:45:06,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:45:06,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:45:06,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:45:06,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:45:06,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:45:06,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:45:06,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:45:06,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:45:06,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:45:06,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:45:06,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:45:06,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:45:06,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:45:06,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:45:06,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:45:06,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:45:06,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:45:06,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:45:06,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:45:06,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:45:06,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:45:06,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:45:06,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:45:06,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:45:06,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:45:06,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:45:06,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:45:06,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:45:06,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:45:06,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:45:06,162 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:45:06,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:45:06,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:45:06,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:45:06,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:45:06,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:45:06,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:45:06,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:45:06,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:45:06,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:45:06,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:45:06,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:45:06,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:45:06,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:45:06,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:45:06,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:45:06,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:45:06,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:06,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:45:06,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:45:06,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:45:06,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:45:06,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:45:06,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:45:06,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:45:06,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:45:06,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:45:06,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:45:06,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:45:06,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:45:06,441 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:45:06,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2020-07-19 21:45:06,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3fa6fad/2ef5ad0b5e444fb4ac1e477e021bf956/FLAGde6d6f192 [2020-07-19 21:45:06,986 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:45:06,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modnf.c [2020-07-19 21:45:06,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3fa6fad/2ef5ad0b5e444fb4ac1e477e021bf956/FLAGde6d6f192 [2020-07-19 21:45:07,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3fa6fad/2ef5ad0b5e444fb4ac1e477e021bf956 [2020-07-19 21:45:07,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:45:07,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:45:07,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:07,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:45:07,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:45:07,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca499e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07, skipping insertion in model container [2020-07-19 21:45:07,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:45:07,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:45:07,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:07,594 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:45:07,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:07,629 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:45:07,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07 WrapperNode [2020-07-19 21:45:07,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:07,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:45:07,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:45:07,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:45:07,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... [2020-07-19 21:45:07,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:45:07,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:45:07,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:45:07,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:45:07,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:45:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:45:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:45:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:45:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:45:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:45:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:45:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:45:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:45:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:45:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:45:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:45:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:45:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:45:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:45:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:45:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:45:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:45:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:45:08,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:45:08,134 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-19 21:45:08,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:08 BoogieIcfgContainer [2020-07-19 21:45:08,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:45:08,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:45:08,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:45:08,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:45:08,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:45:07" (1/3) ... [2020-07-19 21:45:08,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e3530c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:08, skipping insertion in model container [2020-07-19 21:45:08,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:07" (2/3) ... [2020-07-19 21:45:08,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e3530c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:08, skipping insertion in model container [2020-07-19 21:45:08,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:08" (3/3) ... [2020-07-19 21:45:08,156 INFO L109 eAbstractionObserver]: Analyzing ICFG modnf.c [2020-07-19 21:45:08,165 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:45:08,173 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:45:08,191 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:45:08,211 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:45:08,211 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:45:08,211 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:45:08,211 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:45:08,212 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:45:08,212 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:45:08,212 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:45:08,212 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:45:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-19 21:45:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:45:08,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:08,235 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] [2020-07-19 21:45:08,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-19 21:45:08,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:08,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683557979] [2020-07-19 21:45:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1b13a673 [2020-07-19 21:45:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:08,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683557979] [2020-07-19 21:45:08,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:08,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:45:08,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894538660] [2020-07-19 21:45:08,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:45:08,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:08,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:45:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:08,515 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-19 21:45:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:08,651 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-19 21:45:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:45:08,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-19 21:45:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:08,662 INFO L225 Difference]: With dead ends: 58 [2020-07-19 21:45:08,662 INFO L226 Difference]: Without dead ends: 29 [2020-07-19 21:45:08,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-19 21:45:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-19 21:45:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 21:45:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-19 21:45:08,707 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-19 21:45:08,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:08,708 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-19 21:45:08,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:45:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-19 21:45:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:45:08,710 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:08,710 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] [2020-07-19 21:45:08,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:45:08,711 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:08,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-19 21:45:08,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:08,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104433233] [2020-07-19 21:45:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1b13a673 [2020-07-19 21:45:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:08,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104433233] [2020-07-19 21:45:08,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:08,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:45:08,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223717154] [2020-07-19 21:45:08,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:45:08,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:08,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:45:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:45:08,877 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-07-19 21:45:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:09,030 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-19 21:45:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:45:09,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-07-19 21:45:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:09,034 INFO L225 Difference]: With dead ends: 51 [2020-07-19 21:45:09,034 INFO L226 Difference]: Without dead ends: 37 [2020-07-19 21:45:09,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:45:09,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-19 21:45:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-07-19 21:45:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-19 21:45:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-07-19 21:45:09,048 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-07-19 21:45:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:09,048 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-07-19 21:45:09,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:45:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-19 21:45:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 21:45:09,050 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:09,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:09,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:45:09,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:09,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:09,051 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-07-19 21:45:09,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:09,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974949907] [2020-07-19 21:45:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1b13a673 [2020-07-19 21:45:09,072 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:09,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763986476] [2020-07-19 21:45:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1b13a673 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:45:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:09,135 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:09,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:09,182 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:45:09,182 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:45:09,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 21:45:09,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:45:09 BoogieIcfgContainer [2020-07-19 21:45:09,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:45:09,428 INFO L168 Benchmark]: Toolchain (without parser) took 2060.12 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.1 MB in the beginning and 95.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:09,429 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:45:09,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.38 ms. Allocated memory is still 144.7 MB. Free memory was 100.6 MB in the beginning and 90.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:09,431 INFO L168 Benchmark]: Boogie Preprocessor took 142.41 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 90.2 MB in the beginning and 179.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:09,432 INFO L168 Benchmark]: RCFGBuilder took 364.21 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 162.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:09,433 INFO L168 Benchmark]: TraceAbstraction took 1278.98 ms. Allocated memory is still 201.9 MB. Free memory was 162.5 MB in the beginning and 95.7 MB in the end (delta: 66.8 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:09,437 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.38 ms. Allocated memory is still 144.7 MB. Free memory was 100.6 MB in the beginning and 90.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.41 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 90.2 MB in the beginning and 179.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.21 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 162.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1278.98 ms. Allocated memory is still 201.9 MB. Free memory was 162.5 MB in the beginning and 95.7 MB in the end (delta: 66.8 MB). Peak memory consumption was 66.8 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)=5, 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i