/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:50,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:50,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:51,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:51,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:51,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:51,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:51,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:51,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:51,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:51,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:51,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:51,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:51,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:51,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:51,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:51,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:51,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:51,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:51,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:51,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:51,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:51,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:51,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:51,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:51,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:51,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:51,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:51,116 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 [2020-11-06 22:44:51,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:51,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:51,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:51,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:51,183 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:51,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:51,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:51,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:51,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:51,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:51,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:51,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:51,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:51,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:51,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:51,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:51,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:51,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:51,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:51,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:51,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:51,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:51,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:51,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:51,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:51,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:51,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:51,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:51,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:51,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:51,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:51,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:51,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:51,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:51,703 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:51,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-11-06 22:44:51,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516f83ea0/b66e6b958dbc463b9474ba75715a8cb2/FLAGbbc83335f [2020-11-06 22:44:52,371 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:52,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-11-06 22:44:52,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516f83ea0/b66e6b958dbc463b9474ba75715a8cb2/FLAGbbc83335f [2020-11-06 22:44:52,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516f83ea0/b66e6b958dbc463b9474ba75715a8cb2 [2020-11-06 22:44:52,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:52,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:52,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:52,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:52,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:52,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:52" (1/1) ... [2020-11-06 22:44:52,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ec1e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:52, skipping insertion in model container [2020-11-06 22:44:52,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:52" (1/1) ... [2020-11-06 22:44:52,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:52,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:53,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:53,046 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:53,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:53,138 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:53,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53 WrapperNode [2020-11-06 22:44:53,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:53,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:53,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:53,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:53,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (1/1) ... [2020-11-06 22:44:53,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:53,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:53,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:53,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:53,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (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 [2020-11-06 22:44:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:53,979 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:53,979 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 22:44:53,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:53 BoogieIcfgContainer [2020-11-06 22:44:53,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:53,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:53,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:53,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:53,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:52" (1/3) ... [2020-11-06 22:44:53,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3046649f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:53, skipping insertion in model container [2020-11-06 22:44:53,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:53" (2/3) ... [2020-11-06 22:44:53,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3046649f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:53, skipping insertion in model container [2020-11-06 22:44:53,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:53" (3/3) ... [2020-11-06 22:44:54,000 INFO L111 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-11-06 22:44:54,019 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:54,024 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:54,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:54,095 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:54,095 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:54,095 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:54,095 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:54,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:54,096 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:54,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:54,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-11-06 22:44:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:44:54,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:54,132 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] [2020-11-06 22:44:54,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:54,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:54,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1841305657, now seen corresponding path program 1 times [2020-11-06 22:44:54,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:54,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245940483] [2020-11-06 22:44:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:54,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:54,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245940483] [2020-11-06 22:44:54,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:54,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:54,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896524386] [2020-11-06 22:44:54,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:54,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:54,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:54,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:54,534 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-11-06 22:44:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:54,733 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2020-11-06 22:44:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:54,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-06 22:44:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:54,744 INFO L225 Difference]: With dead ends: 81 [2020-11-06 22:44:54,744 INFO L226 Difference]: Without dead ends: 39 [2020-11-06 22:44:54,748 INFO L677 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 [2020-11-06 22:44:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-06 22:44:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-06 22:44:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-06 22:44:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-11-06 22:44:54,799 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 29 [2020-11-06 22:44:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:54,799 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-11-06 22:44:54,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-11-06 22:44:54,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:44:54,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:54,801 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] [2020-11-06 22:44:54,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:54,802 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:54,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:54,803 INFO L82 PathProgramCache]: Analyzing trace with hash -230914229, now seen corresponding path program 1 times [2020-11-06 22:44:54,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:54,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984829829] [2020-11-06 22:44:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:54,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:55,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:55,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984829829] [2020-11-06 22:44:55,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:55,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:55,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967145059] [2020-11-06 22:44:55,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:55,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:55,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:55,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:55,026 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 5 states. [2020-11-06 22:44:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:55,410 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2020-11-06 22:44:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:55,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-06 22:44:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:55,416 INFO L225 Difference]: With dead ends: 77 [2020-11-06 22:44:55,416 INFO L226 Difference]: Without dead ends: 53 [2020-11-06 22:44:55,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-06 22:44:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-11-06 22:44:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-06 22:44:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-11-06 22:44:55,437 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 29 [2020-11-06 22:44:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:55,438 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-11-06 22:44:55,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-06 22:44:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:44:55,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:55,440 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, 1, 1, 1, 1, 1] [2020-11-06 22:44:55,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:55,441 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:55,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash 143959605, now seen corresponding path program 1 times [2020-11-06 22:44:55,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:55,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260621109] [2020-11-06 22:44:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:55,499 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:55,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103921768] [2020-11-06 22:44:55,500 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 [2020-11-06 22:44:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:55,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:55,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:55,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:55,804 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:56,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:44:56,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:56 BoogieIcfgContainer [2020-11-06 22:44:56,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:56,083 INFO L168 Benchmark]: Toolchain (without parser) took 3312.61 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 127.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:56,084 INFO L168 Benchmark]: CDTParser took 1.67 ms. Allocated memory is still 158.3 MB. Free memory was 131.0 MB in the beginning and 131.0 MB in the end (delta: 82.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:56,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.33 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 123.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:56,086 INFO L168 Benchmark]: Boogie Preprocessor took 101.66 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:56,087 INFO L168 Benchmark]: RCFGBuilder took 737.88 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 135.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:56,088 INFO L168 Benchmark]: TraceAbstraction took 2092.24 ms. Allocated memory is still 158.3 MB. Free memory was 135.0 MB in the beginning and 127.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:56,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.67 ms. Allocated memory is still 158.3 MB. Free memory was 131.0 MB in the beginning and 131.0 MB in the end (delta: 82.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.33 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 123.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 101.66 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 737.88 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 135.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2092.24 ms. Allocated memory is still 158.3 MB. Free memory was 135.0 MB in the beginning and 127.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=13, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={6:0}] [L32] COND TRUE i