/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 0.2.0-7d8eed3 [2020-11-06 22:44:17,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:17,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:17,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:17,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:17,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:17,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:17,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:17,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:17,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:17,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:17,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:17,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:17,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:17,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:17,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:17,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:17,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:17,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:17,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:17,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:17,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:17,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:17,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:17,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:17,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:17,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:17,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:17,358 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 22:44:17,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:17,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:17,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:17,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:17,420 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:17,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:17,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:17,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:17,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:17,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:17,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:17,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:17,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:17,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:17,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:17,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:17,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:17,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:17,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:17,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:17,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:17,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:17,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:17,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:17,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:17,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:17,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:17,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:17,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:17,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:17,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:17,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:17,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:17,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:17,873 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:17,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-11-06 22:44:17,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf1e9ccb0/cf79a3127de949cc9d2a4da886504f0d/FLAG98ce749e9 [2020-11-06 22:44:18,634 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:18,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2020-11-06 22:44:18,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf1e9ccb0/cf79a3127de949cc9d2a4da886504f0d/FLAG98ce749e9 [2020-11-06 22:44:18,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf1e9ccb0/cf79a3127de949cc9d2a4da886504f0d [2020-11-06 22:44:18,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:18,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:18,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:18,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:18,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:18,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:18" (1/1) ... [2020-11-06 22:44:19,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8fb997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:18, skipping insertion in model container [2020-11-06 22:44:19,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:18" (1/1) ... [2020-11-06 22:44:19,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:19,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:19,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:19,203 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:19,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:19,245 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:19,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19 WrapperNode [2020-11-06 22:44:19,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:19,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:19,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:19,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:19,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (1/1) ... [2020-11-06 22:44:19,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (1/1) ... [2020-11-06 22:44:19,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (1/1) ... [2020-11-06 22:44:19,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (1/1) ... [2020-11-06 22:44:19,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (1/1) ... [2020-11-06 22:44:19,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (1/1) ... [2020-11-06 22:44:19,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (1/1) ... [2020-11-06 22:44:19,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:19,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:19,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:19,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:19,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (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 22:44:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:19,916 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:19,917 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:44:19,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:19 BoogieIcfgContainer [2020-11-06 22:44:19,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:19,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:19,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:19,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:19,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:18" (1/3) ... [2020-11-06 22:44:19,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a528493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:19, skipping insertion in model container [2020-11-06 22:44:19,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:19" (2/3) ... [2020-11-06 22:44:19,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a528493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:19, skipping insertion in model container [2020-11-06 22:44:19,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:19" (3/3) ... [2020-11-06 22:44:19,928 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-11-06 22:44:19,944 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:19,947 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:19,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:19,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:19,989 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:19,989 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:19,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:19,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:19,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:19,990 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:19,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-06 22:44:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:44:20,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:20,015 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] [2020-11-06 22:44:20,016 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:20,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-11-06 22:44:20,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:20,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983967467] [2020-11-06 22:44:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:20,361 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 22:44:20,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983967467] [2020-11-06 22:44:20,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:20,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:20,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766707068] [2020-11-06 22:44:20,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:20,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:20,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:20,392 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-11-06 22:44:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:20,528 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-11-06 22:44:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:20,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-06 22:44:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:20,538 INFO L225 Difference]: With dead ends: 59 [2020-11-06 22:44:20,538 INFO L226 Difference]: Without dead ends: 26 [2020-11-06 22:44:20,542 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 22:44:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-06 22:44:20,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-06 22:44:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:44:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-11-06 22:44:20,597 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-11-06 22:44:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:20,597 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-11-06 22:44:20,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-11-06 22:44:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:44:20,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:20,600 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] [2020-11-06 22:44:20,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:20,601 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:20,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-11-06 22:44:20,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:20,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066876961] [2020-11-06 22:44:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:20,823 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 22:44:20,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066876961] [2020-11-06 22:44:20,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:20,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:20,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018605572] [2020-11-06 22:44:20,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:20,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:20,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:20,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:20,828 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-11-06 22:44:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:20,999 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-11-06 22:44:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:20,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-06 22:44:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:21,001 INFO L225 Difference]: With dead ends: 42 [2020-11-06 22:44:21,001 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:44:21,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:44:21,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-06 22:44:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:44:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-06 22:44:21,013 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-11-06 22:44:21,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:21,014 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-06 22:44:21,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-06 22:44:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:44:21,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:21,016 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] [2020-11-06 22:44:21,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:21,016 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:21,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-11-06 22:44:21,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:21,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96610225] [2020-11-06 22:44:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:21,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:21,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:21,145 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:21,145 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:21,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:21,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:21 BoogieIcfgContainer [2020-11-06 22:44:21,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:21,191 INFO L168 Benchmark]: Toolchain (without parser) took 2204.65 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 63.5 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:21,192 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:21,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:21,194 INFO L168 Benchmark]: Boogie Preprocessor took 48.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:21,195 INFO L168 Benchmark]: RCFGBuilder took 621.73 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 131.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:21,197 INFO L168 Benchmark]: TraceAbstraction took 1268.35 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 63.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:21,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 621.73 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 131.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1268.35 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 63.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 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