/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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:40,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:40,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:40,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:40,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:40,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:40,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:40,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:40,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:40,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:40,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:40,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:40,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:40,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:40,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:40,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:40,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:40,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:40,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:40,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:40,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:40,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:40,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:40,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:40,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:40,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:40,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:40,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:40,441 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 [2020-10-23 18:42:40,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:40,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:40,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:40,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:40,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:40,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:40,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:40,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:40,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:40,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:40,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:40,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:40,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:40,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:40,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:40,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:40,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:40,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:40,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:40,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:40,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:40,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:40,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:40,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:40,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:40,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:40,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:40,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:40,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:40,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:40,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:41,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:41,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:41,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:41,010 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:41,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-10-23 18:42:41,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5d5a735/d87a5e9a839e4accad994eb9c114029d/FLAG78b39faaa [2020-10-23 18:42:41,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:41,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2f.c [2020-10-23 18:42:41,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5d5a735/d87a5e9a839e4accad994eb9c114029d/FLAG78b39faaa [2020-10-23 18:42:42,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5d5a735/d87a5e9a839e4accad994eb9c114029d [2020-10-23 18:42:42,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:42,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:42,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:42,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:42,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:42,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62043c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42, skipping insertion in model container [2020-10-23 18:42:42,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:42,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:42,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:42,363 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:42,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:42,429 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:42,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42 WrapperNode [2020-10-23 18:42:42,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:42,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:42,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:42,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:42,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (1/1) ... [2020-10-23 18:42:42,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:42,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:42,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:42,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:42,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (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 [2020-10-23 18:42:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:43,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:43,017 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-23 18:42:43,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:43 BoogieIcfgContainer [2020-10-23 18:42:43,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:43,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:43,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:43,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:43,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:42" (1/3) ... [2020-10-23 18:42:43,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0bcd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:43, skipping insertion in model container [2020-10-23 18:42:43,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:42" (2/3) ... [2020-10-23 18:42:43,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0bcd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:43, skipping insertion in model container [2020-10-23 18:42:43,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:43" (3/3) ... [2020-10-23 18:42:43,028 INFO L111 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-10-23 18:42:43,039 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:43,044 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:43,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:43,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:43,098 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:43,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:43,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:43,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:43,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:43,098 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:43,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:43,117 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-23 18:42:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 18:42:43,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:43,123 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] [2020-10-23 18:42:43,124 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:43,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1184195085, now seen corresponding path program 1 times [2020-10-23 18:42:43,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:43,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839707858] [2020-10-23 18:42:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:43,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:43,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839707858] [2020-10-23 18:42:43,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:43,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:43,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961612404] [2020-10-23 18:42:43,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:43,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:43,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:43,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:43,524 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-10-23 18:42:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:43,700 INFO L93 Difference]: Finished difference Result 87 states and 119 transitions. [2020-10-23 18:42:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:43,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-23 18:42:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:43,712 INFO L225 Difference]: With dead ends: 87 [2020-10-23 18:42:43,712 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 18:42:43,716 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 [2020-10-23 18:42:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 18:42:43,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-23 18:42:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-23 18:42:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-23 18:42:43,769 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 31 [2020-10-23 18:42:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:43,770 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-23 18:42:43,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-23 18:42:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 18:42:43,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:43,772 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] [2020-10-23 18:42:43,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:43,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:43,774 INFO L82 PathProgramCache]: Analyzing trace with hash 715203415, now seen corresponding path program 1 times [2020-10-23 18:42:43,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:43,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992377587] [2020-10-23 18:42:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:43,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:43,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297291423] [2020-10-23 18:42:43,813 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 [2020-10-23 18:42:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:43,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 18:42:43,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:42:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:43,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992377587] [2020-10-23 18:42:43,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:42:43,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297291423] [2020-10-23 18:42:43,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:43,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:42:43,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452061886] [2020-10-23 18:42:43,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:42:43,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:43,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:42:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:43,989 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 4 states. [2020-10-23 18:42:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:44,130 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2020-10-23 18:42:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:42:44,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-23 18:42:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:44,135 INFO L225 Difference]: With dead ends: 85 [2020-10-23 18:42:44,135 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 18:42:44,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 18:42:44,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2020-10-23 18:42:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-23 18:42:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-23 18:42:44,153 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 31 [2020-10-23 18:42:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:44,154 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-23 18:42:44,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:42:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-23 18:42:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 18:42:44,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:44,156 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, 1, 1, 1, 1] [2020-10-23 18:42:44,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:42:44,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1817642211, now seen corresponding path program 1 times [2020-10-23 18:42:44,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:44,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277973280] [2020-10-23 18:42:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:44,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:44,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504598655] [2020-10-23 18:42:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:44,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:44,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:44,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:44,613 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:44,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:44,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:44 BoogieIcfgContainer [2020-10-23 18:42:44,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:44,907 INFO L168 Benchmark]: Toolchain (without parser) took 2801.35 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 117.9 MB in the beginning and 109.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:44,910 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:44,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.97 ms. Allocated memory is still 161.5 MB. Free memory was 117.3 MB in the beginning and 135.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:44,912 INFO L168 Benchmark]: Boogie Preprocessor took 85.67 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 143.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:44,914 INFO L168 Benchmark]: RCFGBuilder took 501.37 ms. Allocated memory is still 161.5 MB. Free memory was 143.3 MB in the beginning and 123.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:44,915 INFO L168 Benchmark]: TraceAbstraction took 1883.73 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 123.0 MB in the beginning and 109.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:44,919 INFO L339 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 161.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.97 ms. Allocated memory is still 161.5 MB. Free memory was 117.3 MB in the beginning and 135.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.67 ms. Allocated memory is still 161.5 MB. Free memory was 135.5 MB in the beginning and 143.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 501.37 ms. Allocated memory is still 161.5 MB. Free memory was 143.3 MB in the beginning and 123.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1883.73 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 123.0 MB in the beginning and 109.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 47.9 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)=11, 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={3:0}] [L32] COND TRUE i