/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/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:24,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:24,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:24,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:24,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:24,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:24,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:24,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:24,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:24,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:24,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:24,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:24,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:24,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:24,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:24,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:24,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:24,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:24,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:24,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:24,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:24,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:24,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:24,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:24,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:24,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:24,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:24,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:24,548 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 18:42:24,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:24,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:24,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:24,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:24,579 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:24,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:24,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:24,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:24,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:24,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:24,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:24,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:24,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:24,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:24,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:24,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:24,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:24,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:24,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:24,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:24,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:24,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:24,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:24,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:24,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:24,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:24,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:24,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:24,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:24,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:24,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:25,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:25,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:25,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:25,011 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:25,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2020-10-23 18:42:25,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cca6ff79/a50196955f08432084010f31ada8b7e2/FLAG49344db53 [2020-10-23 18:42:25,748 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:25,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2liff.c [2020-10-23 18:42:25,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cca6ff79/a50196955f08432084010f31ada8b7e2/FLAG49344db53 [2020-10-23 18:42:26,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cca6ff79/a50196955f08432084010f31ada8b7e2 [2020-10-23 18:42:26,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:26,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:26,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:26,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:26,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:26,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30643ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26, skipping insertion in model container [2020-10-23 18:42:26,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:26,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:26,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:26,385 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:26,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:26,430 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:26,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26 WrapperNode [2020-10-23 18:42:26,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:26,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:26,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:26,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:26,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:26,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:26,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:26,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:26,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (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 18:42:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:26,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:26,630 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:26,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:26,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:27,301 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:27,302 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:42:27,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:27 BoogieIcfgContainer [2020-10-23 18:42:27,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:27,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:27,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:27,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:27,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:26" (1/3) ... [2020-10-23 18:42:27,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236b11c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:27, skipping insertion in model container [2020-10-23 18:42:27,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (2/3) ... [2020-10-23 18:42:27,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236b11c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:27, skipping insertion in model container [2020-10-23 18:42:27,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:27" (3/3) ... [2020-10-23 18:42:27,318 INFO L111 eAbstractionObserver]: Analyzing ICFG s2liff.c [2020-10-23 18:42:27,332 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:27,338 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:27,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:27,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:27,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:27,399 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:27,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:27,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:27,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:27,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:27,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-23 18:42:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:27,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:27,435 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] [2020-10-23 18:42:27,435 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash 371341983, now seen corresponding path program 1 times [2020-10-23 18:42:27,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:27,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281595877] [2020-10-23 18:42:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:27,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:27,830 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 18:42:27,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281595877] [2020-10-23 18:42:27,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:27,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:27,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068839543] [2020-10-23 18:42:27,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:27,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:27,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:27,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:27,855 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-10-23 18:42:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:27,984 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-10-23 18:42:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:27,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-23 18:42:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:27,995 INFO L225 Difference]: With dead ends: 65 [2020-10-23 18:42:27,995 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 18:42:27,999 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 18:42:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 18:42:28,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 18:42:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:42:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-23 18:42:28,044 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2020-10-23 18:42:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:28,045 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-23 18:42:28,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-23 18:42:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:28,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:28,047 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] [2020-10-23 18:42:28,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:28,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1793608214, now seen corresponding path program 1 times [2020-10-23 18:42:28,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:28,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314729431] [2020-10-23 18:42:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:28,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:28,191 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 18:42:28,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314729431] [2020-10-23 18:42:28,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:28,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660385664] [2020-10-23 18:42:28,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:28,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:28,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:28,195 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-10-23 18:42:28,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:28,400 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2020-10-23 18:42:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:28,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-23 18:42:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:28,402 INFO L225 Difference]: With dead ends: 50 [2020-10-23 18:42:28,402 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 18:42:28,404 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 [2020-10-23 18:42:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 18:42:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-23 18:42:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:42:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-23 18:42:28,418 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-10-23 18:42:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:28,418 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-23 18:42:28,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-23 18:42:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 18:42:28,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:28,420 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 18:42:28,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:28,420 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2090381425, now seen corresponding path program 1 times [2020-10-23 18:42:28,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:28,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397889268] [2020-10-23 18:42:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:28,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:28,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:28,616 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:28,616 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:28,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:28,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:28 BoogieIcfgContainer [2020-10-23 18:42:28,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:28,666 INFO L168 Benchmark]: Toolchain (without parser) took 2536.75 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 69.8 MB in the end (delta: 67.2 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,667 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 161.5 MB. Free memory was 134.1 MB in the beginning and 134.0 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:28,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.42 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 126.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,670 INFO L168 Benchmark]: Boogie Preprocessor took 92.53 ms. Allocated memory is still 161.5 MB. Free memory was 126.5 MB in the beginning and 124.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,671 INFO L168 Benchmark]: RCFGBuilder took 777.99 ms. Allocated memory is still 161.5 MB. Free memory was 124.7 MB in the beginning and 141.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,672 INFO L168 Benchmark]: TraceAbstraction took 1356.32 ms. Allocated memory is still 161.5 MB. Free memory was 141.1 MB in the beginning and 69.8 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 161.5 MB. Free memory was 134.1 MB in the beginning and 134.0 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.42 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 126.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.53 ms. Allocated memory is still 161.5 MB. Free memory was 126.5 MB in the beginning and 124.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 777.99 ms. Allocated memory is still 161.5 MB. Free memory was 124.7 MB in the beginning and 141.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1356.32 ms. Allocated memory is still 161.5 MB. Free memory was 141.1 MB in the beginning and 69.8 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 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)=51, 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] int *a = malloc(sizeof(int)*N); [L31] sum[0] = N [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L32] COND TRUE i