/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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:45:07,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:45:07,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:45:07,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:45:07,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:45:07,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:45:07,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:45:07,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:45:07,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:45:07,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:45:07,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:45:07,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:45:07,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:45:07,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:45:07,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:45:07,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:45:07,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:45:07,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:45:07,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:45:07,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:45:07,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:45:07,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:45:07,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:45:07,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:45:07,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:45:07,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:45:07,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:45:07,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:45:07,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:45:07,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:45:07,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:45:07,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:45:07,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:45:07,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:45:07,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:45:07,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:45:07,206 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 21:45:07,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:45:07,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:45:07,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:45:07,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:45:07,251 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:45:07,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:45:07,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:45:07,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:45:07,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:45:07,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:45:07,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:45:07,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:45:07,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:45:07,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:45:07,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:45:07,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:45:07,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:45:07,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:45:07,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:45:07,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:45:07,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:45:07,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:07,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:45:07,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:45:07,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:45:07,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:45:07,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:45:07,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:45:07,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:45:07,259 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 21:45:07,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:45:07,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:45:07,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:45:07,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:45:07,597 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:45:07,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-07-19 21:45:07,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7399e14f9/092b2f7ccf1849eeb85fb18592fc7a73/FLAGad204a80b [2020-07-19 21:45:08,226 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:45:08,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c [2020-07-19 21:45:08,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7399e14f9/092b2f7ccf1849eeb85fb18592fc7a73/FLAGad204a80b [2020-07-19 21:45:08,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7399e14f9/092b2f7ccf1849eeb85fb18592fc7a73 [2020-07-19 21:45:08,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:45:08,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:45:08,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:08,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:45:08,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:45:08,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283db407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08, skipping insertion in model container [2020-07-19 21:45:08,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:08,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:45:08,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:45:08,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:08,877 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:45:08,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:08,922 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:45:08,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08 WrapperNode [2020-07-19 21:45:08,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:08,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:45:08,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:45:08,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:45:09,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:09,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:09,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:09,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:09,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:09,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:09,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (1/1) ... [2020-07-19 21:45:09,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:45:09,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:45:09,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:45:09,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:45:09,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (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 21:45:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:45:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:45:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:45:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:45:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:45:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:45:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:45:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:45:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:45:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:45:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:45:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:45:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:45:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:45:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:45:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:45:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:45:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:45:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:45:09,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:45:09,503 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-19 21:45:09,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:09 BoogieIcfgContainer [2020-07-19 21:45:09,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:45:09,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:45:09,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:45:09,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:45:09,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:45:08" (1/3) ... [2020-07-19 21:45:09,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b2253b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:09, skipping insertion in model container [2020-07-19 21:45:09,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:08" (2/3) ... [2020-07-19 21:45:09,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b2253b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:09, skipping insertion in model container [2020-07-19 21:45:09,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:09" (3/3) ... [2020-07-19 21:45:09,522 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-07-19 21:45:09,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:45:09,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:45:09,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:45:09,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:45:09,597 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:45:09,597 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:45:09,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:45:09,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:45:09,598 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:45:09,598 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:45:09,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:45:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-19 21:45:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 21:45:09,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:09,632 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 21:45:09,632 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:09,640 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-07-19 21:45:09,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:09,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882229725] [2020-07-19 21:45:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48b033da [2020-07-19 21:45:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:09,867 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 21:45:09,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882229725] [2020-07-19 21:45:09,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:09,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:45:09,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754432333] [2020-07-19 21:45:09,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:45:09,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:09,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:45:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:09,891 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-07-19 21:45:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:10,045 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-07-19 21:45:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:45:10,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-19 21:45:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:10,058 INFO L225 Difference]: With dead ends: 70 [2020-07-19 21:45:10,059 INFO L226 Difference]: Without dead ends: 35 [2020-07-19 21:45:10,063 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 21:45:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-19 21:45:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-19 21:45:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-19 21:45:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-19 21:45:10,110 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-07-19 21:45:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:10,111 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-19 21:45:10,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:45:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-19 21:45:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 21:45:10,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:10,113 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 21:45:10,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:45:10,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:10,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-07-19 21:45:10,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:10,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833035992] [2020-07-19 21:45:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48b033da [2020-07-19 21:45:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:10,267 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 21:45:10,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833035992] [2020-07-19 21:45:10,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:10,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:45:10,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802971523] [2020-07-19 21:45:10,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:45:10,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:10,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:45:10,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:45:10,277 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-07-19 21:45:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:10,490 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-07-19 21:45:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:45:10,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-07-19 21:45:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:10,496 INFO L225 Difference]: With dead ends: 67 [2020-07-19 21:45:10,496 INFO L226 Difference]: Without dead ends: 47 [2020-07-19 21:45:10,498 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 21:45:10,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-19 21:45:10,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-07-19 21:45:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-19 21:45:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-19 21:45:10,516 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-07-19 21:45:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:10,516 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-19 21:45:10,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:45:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-19 21:45:10,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-19 21:45:10,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:10,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:10,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:45:10,519 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:10,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:10,520 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-07-19 21:45:10,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:10,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395371524] [2020-07-19 21:45:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48b033da [2020-07-19 21:45:10,567 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 21:45:10,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647297621] [2020-07-19 21:45:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48b033da 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 21:45:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:10,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:10,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:10,771 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:45:10,772 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:45:10,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 21:45:11,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:45:11 BoogieIcfgContainer [2020-07-19 21:45:11,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:45:11,044 INFO L168 Benchmark]: Toolchain (without parser) took 2446.09 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 103.5 MB in the beginning and 200.0 MB in the end (delta: -96.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:45:11,045 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 145.8 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:45:11,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.90 ms. Allocated memory is still 145.8 MB. Free memory was 103.1 MB in the beginning and 92.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:11,047 INFO L168 Benchmark]: Boogie Preprocessor took 163.69 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.4 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:11,048 INFO L168 Benchmark]: RCFGBuilder took 422.11 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 161.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:11,049 INFO L168 Benchmark]: TraceAbstraction took 1529.48 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.4 MB in the beginning and 200.0 MB in the end (delta: -38.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:45:11,053 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 145.8 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.90 ms. Allocated memory is still 145.8 MB. Free memory was 103.1 MB in the beginning and 92.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.69 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.4 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.11 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 161.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1529.48 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.4 MB in the beginning and 200.0 MB in the end (delta: -38.6 MB). There was no memory consumed. 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)=6, 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i