/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/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:41:36,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:41:36,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:41:36,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:41:36,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:41:36,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:41:36,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:41:36,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:41:36,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:41:36,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:41:36,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:41:36,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:41:36,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:41:36,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:41:36,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:41:36,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:41:36,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:41:36,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:41:36,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:41:36,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:41:36,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:41:36,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:41:36,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:41:36,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:41:36,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:41:36,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:41:36,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:41:36,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:41:36,914 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 18:41:36,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:41:36,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:41:36,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:41:36,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:41:36,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:41:36,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:41:36,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:41:36,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:41:36,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:41:36,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:41:36,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:41:36,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:41:36,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:41:36,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:41:36,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:41:36,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:41:36,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:41:36,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:41:36,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:41:36,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:41:36,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:41:36,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:41:36,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:41:36,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:41:36,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:41:36,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:41:36,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:41:36,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:41:36,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:41:36,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:41:37,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:41:37,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:41:37,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:41:37,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:41:37,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:41:37,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-23 18:41:37,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8ad4481/c898b7afc1c44bd3a67577d7857c71ff/FLAG5cb98a9a1 [2020-10-23 18:41:38,298 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:41:38,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-23 18:41:38,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8ad4481/c898b7afc1c44bd3a67577d7857c71ff/FLAG5cb98a9a1 [2020-10-23 18:41:38,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8ad4481/c898b7afc1c44bd3a67577d7857c71ff [2020-10-23 18:41:38,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:41:38,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:41:38,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:38,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:41:38,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:41:38,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:38,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adc0c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38, skipping insertion in model container [2020-10-23 18:41:38,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:38,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:41:38,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:41:38,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:38,917 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:41:38,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:38,962 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:41:38,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38 WrapperNode [2020-10-23 18:41:38,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:38,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:41:38,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:41:38,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:41:38,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:38,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:38,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:38,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:38,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:39,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:39,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (1/1) ... [2020-10-23 18:41:39,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:41:39,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:41:39,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:41:39,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:41:39,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (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 18:41:39,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:41:39,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:41:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:41:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:41:39,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:41:39,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:41:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:41:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:41:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:41:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:41:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:41:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:41:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:41:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:41:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:41:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:41:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:41:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:41:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:41:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:41:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:41:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:41:39,669 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:41:39,669 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:41:39,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:39 BoogieIcfgContainer [2020-10-23 18:41:39,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:41:39,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:41:39,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:41:39,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:41:39,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:41:38" (1/3) ... [2020-10-23 18:41:39,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65129667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:39, skipping insertion in model container [2020-10-23 18:41:39,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:38" (2/3) ... [2020-10-23 18:41:39,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65129667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:39, skipping insertion in model container [2020-10-23 18:41:39,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:39" (3/3) ... [2020-10-23 18:41:39,680 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-10-23 18:41:39,693 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:41:39,698 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:41:39,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:41:39,744 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:41:39,744 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:41:39,744 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:41:39,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:41:39,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:41:39,744 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:41:39,745 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:41:39,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:41:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-23 18:41:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:41:39,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:39,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:41:39,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:39,780 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-23 18:41:39,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:39,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426604116] [2020-10-23 18:41:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,100 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 18:41:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426604116] [2020-10-23 18:41:40,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:40,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:41:40,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677109693] [2020-10-23 18:41:40,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:41:40,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:41:40,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:40,129 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-23 18:41:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:40,311 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-23 18:41:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:41:40,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-23 18:41:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:40,322 INFO L225 Difference]: With dead ends: 61 [2020-10-23 18:41:40,323 INFO L226 Difference]: Without dead ends: 27 [2020-10-23 18:41:40,326 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 18:41:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-23 18:41:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-23 18:41:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 18:41:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-23 18:41:40,374 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2020-10-23 18:41:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:40,375 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-23 18:41:40,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:41:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-23 18:41:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:41:40,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:40,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:41:40,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:41:40,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:40,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-23 18:41:40,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:40,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512496792] [2020-10-23 18:41:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,659 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:41:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,703 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 18:41:40,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512496792] [2020-10-23 18:41:40,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:40,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:41:40,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132142380] [2020-10-23 18:41:40,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:41:40,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:40,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:41:40,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:41:40,716 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-10-23 18:41:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:40,995 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-23 18:41:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:41:40,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-23 18:41:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:40,998 INFO L225 Difference]: With dead ends: 44 [2020-10-23 18:41:40,998 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 18:41:40,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:41:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 18:41:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-23 18:41:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 18:41:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-23 18:41:41,010 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 22 [2020-10-23 18:41:41,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:41,011 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-23 18:41:41,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:41:41,011 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-23 18:41:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:41:41,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:41,013 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] [2020-10-23 18:41:41,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:41:41,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:41,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-23 18:41:41,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:41,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481260678] [2020-10-23 18:41:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:41,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:41,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:41,204 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:41:41,205 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:41:41,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:41:41,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:41:41 BoogieIcfgContainer [2020-10-23 18:41:41,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:41:41,251 INFO L168 Benchmark]: Toolchain (without parser) took 2571.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 64.0 MB in the end (delta: 62.9 MB). Peak memory consumption was 63.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:41,251 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:41:41,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.13 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:41,254 INFO L168 Benchmark]: Boogie Preprocessor took 45.58 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:41,255 INFO L168 Benchmark]: RCFGBuilder took 660.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 131.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:41,256 INFO L168 Benchmark]: TraceAbstraction took 1576.30 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 64.0 MB in the end (delta: 67.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:41,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.13 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.58 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 660.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 131.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1576.30 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 64.0 MB in the end (delta: 67.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=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] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] COND TRUE i