/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/s1liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:21,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:21,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:21,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:21,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:21,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:21,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:21,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:21,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:21,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:21,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:21,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:21,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:21,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:21,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:21,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:21,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:21,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:21,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:21,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:21,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:21,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:21,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:21,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:21,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:21,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:21,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:21,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:21,679 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 18:42:21,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:21,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:21,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:21,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:21,735 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:21,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:21,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:21,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:21,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:21,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:21,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:21,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:21,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:21,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:21,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:21,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:21,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:21,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:21,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:21,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:21,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:21,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:21,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:21,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:21,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:21,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:21,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:21,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:21,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:21,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:22,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:22,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:22,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:22,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:22,220 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:22,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1liff.c [2020-10-23 18:42:22,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60c2d07a/66d2bf5a4b904682ab606b95661755c8/FLAG0b04d1c37 [2020-10-23 18:42:22,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:22,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c [2020-10-23 18:42:22,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60c2d07a/66d2bf5a4b904682ab606b95661755c8/FLAG0b04d1c37 [2020-10-23 18:42:23,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60c2d07a/66d2bf5a4b904682ab606b95661755c8 [2020-10-23 18:42:23,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:23,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:23,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:23,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:23,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:23,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f9ee3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23, skipping insertion in model container [2020-10-23 18:42:23,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:23,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:23,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:23,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:23,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:23,588 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:23,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23 WrapperNode [2020-10-23 18:42:23,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:23,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:23,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:23,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:23,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:23,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:23,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:23,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:23,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (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 18:42:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:23,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:23,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:23,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:24,348 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:24,348 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:42:24,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:24 BoogieIcfgContainer [2020-10-23 18:42:24,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:24,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:24,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:24,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:24,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:23" (1/3) ... [2020-10-23 18:42:24,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a523358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:24, skipping insertion in model container [2020-10-23 18:42:24,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23" (2/3) ... [2020-10-23 18:42:24,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a523358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:24, skipping insertion in model container [2020-10-23 18:42:24,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:24" (3/3) ... [2020-10-23 18:42:24,366 INFO L111 eAbstractionObserver]: Analyzing ICFG s1liff.c [2020-10-23 18:42:24,381 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:24,387 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:24,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:24,454 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:24,454 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:24,455 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:24,455 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:24,455 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:24,455 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:24,456 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:24,456 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-23 18:42:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:24,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:24,495 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 18:42:24,495 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:24,507 INFO L82 PathProgramCache]: Analyzing trace with hash 371341983, now seen corresponding path program 1 times [2020-10-23 18:42:24,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:24,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936946171] [2020-10-23 18:42:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:24,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:24,913 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 18:42:24,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936946171] [2020-10-23 18:42:24,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:24,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:24,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836511660] [2020-10-23 18:42:24,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:24,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:24,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:24,941 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-10-23 18:42:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:25,088 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-10-23 18:42:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:25,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-23 18:42:25,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:25,099 INFO L225 Difference]: With dead ends: 65 [2020-10-23 18:42:25,099 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 18:42:25,103 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 18:42:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 18:42:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 18:42:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:42:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-23 18:42:25,151 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2020-10-23 18:42:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:25,152 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-23 18:42:25,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-23 18:42:25,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:25,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:25,154 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 18:42:25,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:25,155 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:25,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1793608214, now seen corresponding path program 1 times [2020-10-23 18:42:25,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:25,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982578062] [2020-10-23 18:42:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,411 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 18:42:25,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982578062] [2020-10-23 18:42:25,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:25,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:25,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502233251] [2020-10-23 18:42:25,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:25,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:25,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:25,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:25,421 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-10-23 18:42:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:25,624 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2020-10-23 18:42:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:25,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-23 18:42:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:25,626 INFO L225 Difference]: With dead ends: 50 [2020-10-23 18:42:25,626 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 18:42:25,627 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 18:42:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 18:42:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-23 18:42:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:42:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-23 18:42:25,638 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-10-23 18:42:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:25,639 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-23 18:42:25,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-23 18:42:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 18:42:25,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:25,644 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 18:42:25,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:25,645 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:25,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:25,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2090381425, now seen corresponding path program 1 times [2020-10-23 18:42:25,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:25,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975189532] [2020-10-23 18:42:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:25,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:25,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:25,838 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:25,839 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:25,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:25,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:25 BoogieIcfgContainer [2020-10-23 18:42:25,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:25,890 INFO L168 Benchmark]: Toolchain (without parser) took 2619.47 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 101.8 MB in the beginning and 108.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:25,891 INFO L168 Benchmark]: CDTParser took 1.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:25,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.03 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 90.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:25,893 INFO L168 Benchmark]: Boogie Preprocessor took 88.99 ms. Allocated memory is still 125.8 MB. Free memory was 90.8 MB in the beginning and 89.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:25,894 INFO L168 Benchmark]: RCFGBuilder took 667.56 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 89.1 MB in the beginning and 137.7 MB in the end (delta: -48.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:25,895 INFO L168 Benchmark]: TraceAbstraction took 1531.81 ms. Allocated memory is still 157.3 MB. Free memory was 137.1 MB in the beginning and 108.0 MB in the end (delta: 29.1 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:25,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.03 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 90.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.99 ms. Allocated memory is still 125.8 MB. Free memory was 90.8 MB in the beginning and 89.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 667.56 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 89.1 MB in the beginning and 137.7 MB in the end (delta: -48.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1531.81 ms. Allocated memory is still 157.3 MB. Free memory was 137.1 MB in the beginning and 108.0 MB in the end (delta: 29.1 MB). Peak memory consumption was 30.0 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)=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={11:0}] [L32] COND TRUE i