/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/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:18,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:18,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:18,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:18,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:18,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:18,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:18,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:18,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:18,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:18,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:18,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:18,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:18,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:18,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:18,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:18,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:18,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:18,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:18,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:18,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:18,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:18,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:18,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:18,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:18,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:18,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:18,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:18,903 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 18:42:18,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:18,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:18,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:18,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:18,962 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:18,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:18,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:18,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:18,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:18,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:18,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:18,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:18,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:18,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:18,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:18,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:18,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:18,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:18,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:18,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:18,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:18,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:18,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:18,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:18,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:18,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:18,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:18,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:18,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:18,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:19,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:19,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:19,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:19,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:19,446 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:19,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2020-10-23 18:42:19,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e252cc506/31660c6294484c8cb05c0d44bd26daea/FLAGdebe0a0d4 [2020-10-23 18:42:20,255 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:20,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s12iff.c [2020-10-23 18:42:20,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e252cc506/31660c6294484c8cb05c0d44bd26daea/FLAGdebe0a0d4 [2020-10-23 18:42:20,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e252cc506/31660c6294484c8cb05c0d44bd26daea [2020-10-23 18:42:20,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:20,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:20,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:20,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:20,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:20,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56179408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20, skipping insertion in model container [2020-10-23 18:42:20,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:20,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:20,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:20,827 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:20,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:20,871 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:20,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20 WrapperNode [2020-10-23 18:42:20,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:20,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:20,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:20,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:20,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (1/1) ... [2020-10-23 18:42:20,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:20,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:20,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:20,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:20,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (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 18:42:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:21,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:21,650 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:42:21,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:21 BoogieIcfgContainer [2020-10-23 18:42:21,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:21,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:21,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:21,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:21,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:20" (1/3) ... [2020-10-23 18:42:21,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55265782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:21, skipping insertion in model container [2020-10-23 18:42:21,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:20" (2/3) ... [2020-10-23 18:42:21,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55265782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:21, skipping insertion in model container [2020-10-23 18:42:21,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:21" (3/3) ... [2020-10-23 18:42:21,663 INFO L111 eAbstractionObserver]: Analyzing ICFG s12iff.c [2020-10-23 18:42:21,677 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:21,683 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:21,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:21,734 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:21,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:21,735 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:21,735 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:21,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:21,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:21,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:21,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-23 18:42:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:21,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:21,769 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 18:42:21,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:21,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1702539242, now seen corresponding path program 1 times [2020-10-23 18:42:21,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:21,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984384675] [2020-10-23 18:42:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:22,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:22,083 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 18:42:22,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984384675] [2020-10-23 18:42:22,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:22,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:22,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686598476] [2020-10-23 18:42:22,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:22,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:22,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:22,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:22,113 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-23 18:42:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:22,245 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-23 18:42:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:22,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-23 18:42:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:22,257 INFO L225 Difference]: With dead ends: 67 [2020-10-23 18:42:22,257 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 18:42:22,261 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 18:42:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 18:42:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-23 18:42:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 18:42:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-23 18:42:22,313 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2020-10-23 18:42:22,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:22,314 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-23 18:42:22,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-23 18:42:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:22,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:22,316 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 18:42:22,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:22,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:22,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1952199574, now seen corresponding path program 1 times [2020-10-23 18:42:22,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:22,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302003324] [2020-10-23 18:42:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:22,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:22,463 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 18:42:22,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302003324] [2020-10-23 18:42:22,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:22,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:22,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200031290] [2020-10-23 18:42:22,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:22,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:22,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:22,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:22,473 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-23 18:42:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:22,784 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-23 18:42:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:22,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-23 18:42:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:22,789 INFO L225 Difference]: With dead ends: 53 [2020-10-23 18:42:22,790 INFO L226 Difference]: Without dead ends: 38 [2020-10-23 18:42:22,792 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 18:42:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-23 18:42:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-23 18:42:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:42:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-23 18:42:22,821 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-23 18:42:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:22,821 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-23 18:42:22,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-23 18:42:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 18:42:22,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:22,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:22,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:22,824 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:22,826 INFO L82 PathProgramCache]: Analyzing trace with hash -856996485, now seen corresponding path program 1 times [2020-10-23 18:42:22,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:22,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671251831] [2020-10-23 18:42:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:22,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:22,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:23,018 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:23,018 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:23,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:23,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:23 BoogieIcfgContainer [2020-10-23 18:42:23,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:23,121 INFO L168 Benchmark]: Toolchain (without parser) took 2543.70 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 56.7 MB in the end (delta: 69.6 MB). Peak memory consumption was 68.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:23,122 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 124.0 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:23,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.68 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:23,125 INFO L168 Benchmark]: Boogie Preprocessor took 45.09 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:23,126 INFO L168 Benchmark]: RCFGBuilder took 733.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 129.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:23,127 INFO L168 Benchmark]: TraceAbstraction took 1461.01 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 56.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:23,131 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 was 124.0 MB in the beginning and 124.0 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.68 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.09 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 733.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 129.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1461.01 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 56.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 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] = 1 [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