/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:07,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:07,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:07,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:07,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:07,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:07,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:07,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:07,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:07,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:07,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:07,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:07,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:07,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:07,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:07,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:07,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:07,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:07,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:07,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:07,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:07,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:07,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:07,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:07,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:07,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:07,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:07,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:07,516 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 18:42:07,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:07,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:07,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:07,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:07,575 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:07,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:07,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:07,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:07,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:07,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:07,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:07,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:07,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:07,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:07,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:07,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:07,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:07,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:07,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:07,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:07,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:07,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:07,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:07,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:07,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:07,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:07,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:07,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:07,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:07,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:08,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:08,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:08,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:08,078 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:08,078 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:08,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-10-23 18:42:08,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d13e49f/1722b947d7054132bc82bcbb10af218e/FLAG23228da85 [2020-10-23 18:42:08,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:08,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2020-10-23 18:42:08,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d13e49f/1722b947d7054132bc82bcbb10af218e/FLAG23228da85 [2020-10-23 18:42:09,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d13e49f/1722b947d7054132bc82bcbb10af218e [2020-10-23 18:42:09,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:09,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:09,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:09,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:09,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:09,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58af187a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09, skipping insertion in model container [2020-10-23 18:42:09,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:09,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:09,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:09,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:09,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:09,526 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:09,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09 WrapperNode [2020-10-23 18:42:09,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:09,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:09,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:09,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:09,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (1/1) ... [2020-10-23 18:42:09,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:09,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:09,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:09,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:09,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (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 18:42:09,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:09,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:09,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:09,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:09,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:09,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:10,234 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:10,235 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:42:10,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:10 BoogieIcfgContainer [2020-10-23 18:42:10,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:10,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:10,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:10,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:10,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:09" (1/3) ... [2020-10-23 18:42:10,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626d1fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:10, skipping insertion in model container [2020-10-23 18:42:10,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:09" (2/3) ... [2020-10-23 18:42:10,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626d1fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:10, skipping insertion in model container [2020-10-23 18:42:10,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:10" (3/3) ... [2020-10-23 18:42:10,262 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-10-23 18:42:10,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:10,280 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:10,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:10,323 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:10,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:10,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:10,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:10,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:10,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:10,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:10,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-23 18:42:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:42:10,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:10,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:10,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-23 18:42:10,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:10,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725789447] [2020-10-23 18:42:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:10,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:10,661 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 18:42:10,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725789447] [2020-10-23 18:42:10,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:10,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:10,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655668863] [2020-10-23 18:42:10,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:10,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:10,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:10,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:10,689 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-23 18:42:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:10,813 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-23 18:42:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:10,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-23 18:42:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:10,824 INFO L225 Difference]: With dead ends: 59 [2020-10-23 18:42:10,824 INFO L226 Difference]: Without dead ends: 26 [2020-10-23 18:42:10,828 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 18:42:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-23 18:42:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-23 18:42:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-23 18:42:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-23 18:42:10,875 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-23 18:42:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:10,876 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-23 18:42:10,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-23 18:42:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:42:10,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:10,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:10,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:10,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:10,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:10,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-23 18:42:10,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:10,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54762787] [2020-10-23 18:42:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:11,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:11,175 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 18:42:11,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54762787] [2020-10-23 18:42:11,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:11,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:11,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208993462] [2020-10-23 18:42:11,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:11,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:11,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:11,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:11,185 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-23 18:42:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:11,401 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-10-23 18:42:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:11,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-23 18:42:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:11,404 INFO L225 Difference]: With dead ends: 42 [2020-10-23 18:42:11,404 INFO L226 Difference]: Without dead ends: 31 [2020-10-23 18:42:11,405 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 [2020-10-23 18:42:11,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-23 18:42:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-23 18:42:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:42:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-23 18:42:11,416 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-10-23 18:42:11,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:11,416 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-23 18:42:11,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:11,417 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-23 18:42:11,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 18:42:11,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:11,418 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] [2020-10-23 18:42:11,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:11,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:11,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-23 18:42:11,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:11,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907709422] [2020-10-23 18:42:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:11,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:11,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:11,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:11,557 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:11,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:11,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:11 BoogieIcfgContainer [2020-10-23 18:42:11,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:11,615 INFO L168 Benchmark]: Toolchain (without parser) took 2430.15 ms. Allocated memory is still 152.0 MB. Free memory was 127.6 MB in the beginning and 68.7 MB in the end (delta: 59.0 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:11,616 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:11,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.52 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 117.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:11,621 INFO L168 Benchmark]: Boogie Preprocessor took 90.93 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 115.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:11,622 INFO L168 Benchmark]: RCFGBuilder took 616.72 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 99.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:11,625 INFO L168 Benchmark]: TraceAbstraction took 1369.33 ms. Allocated memory is still 152.0 MB. Free memory was 99.1 MB in the beginning and 68.7 MB in the end (delta: 30.4 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:11,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 337.52 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 117.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.93 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 115.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 616.72 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 99.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1369.33 ms. Allocated memory is still 152.0 MB. Free memory was 99.1 MB in the beginning and 68.7 MB in the end (delta: 30.4 MB). Peak memory consumption was 32.0 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)=118, 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={8:0}] [L31] COND TRUE i