/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/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:02,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:02,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:02,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:02,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:02,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:02,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:02,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:02,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:02,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:02,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:02,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:02,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:02,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:02,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:02,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:02,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:02,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:02,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:02,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:02,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:02,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:02,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:02,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:02,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:02,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:02,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:02,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:02,276 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 18:42:02,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:02,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:02,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:02,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:02,332 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:02,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:02,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:02,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:02,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:02,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:02,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:02,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:02,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:02,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:02,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:02,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:02,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:02,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:02,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:02,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:02,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:02,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:02,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:02,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:02,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:02,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:02,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:02,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:02,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:02,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:02,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:02,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:02,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:02,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:02,772 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:02,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-10-23 18:42:02,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfcf89b5/e4513c3fad3b453b8413e00e6bf86a02/FLAGcb1b9fdcf [2020-10-23 18:42:03,427 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:03,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4f.c [2020-10-23 18:42:03,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfcf89b5/e4513c3fad3b453b8413e00e6bf86a02/FLAGcb1b9fdcf [2020-10-23 18:42:03,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfcf89b5/e4513c3fad3b453b8413e00e6bf86a02 [2020-10-23 18:42:03,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:03,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:03,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:03,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:03,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:03,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:03" (1/1) ... [2020-10-23 18:42:03,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1770c3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:03, skipping insertion in model container [2020-10-23 18:42:03,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:03" (1/1) ... [2020-10-23 18:42:03,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:03,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:04,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:04,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:04,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:04,065 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:04,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04 WrapperNode [2020-10-23 18:42:04,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:04,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:04,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:04,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:04,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:04,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:04,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:04,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:04,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (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 18:42:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:04,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:04,577 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 18:42:04,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:04 BoogieIcfgContainer [2020-10-23 18:42:04,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:04,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:04,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:04,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:03" (1/3) ... [2020-10-23 18:42:04,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e872d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:04, skipping insertion in model container [2020-10-23 18:42:04,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (2/3) ... [2020-10-23 18:42:04,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e872d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:04, skipping insertion in model container [2020-10-23 18:42:04,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:04" (3/3) ... [2020-10-23 18:42:04,594 INFO L111 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-10-23 18:42:04,607 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:04,612 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:04,626 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:04,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:04,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:04,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:04,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:04,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:04,677 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:04,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:04,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-23 18:42:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 18:42:04,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:04,710 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] [2020-10-23 18:42:04,710 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1041170357, now seen corresponding path program 1 times [2020-10-23 18:42:04,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:04,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735623433] [2020-10-23 18:42:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:05,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:05,042 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 18:42:05,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735623433] [2020-10-23 18:42:05,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:05,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:05,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465195575] [2020-10-23 18:42:05,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:05,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:05,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:05,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:05,068 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-23 18:42:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:05,190 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-23 18:42:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:05,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-23 18:42:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:05,200 INFO L225 Difference]: With dead ends: 69 [2020-10-23 18:42:05,200 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 18:42:05,204 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 18:42:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 18:42:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-23 18:42:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:42:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-23 18:42:05,270 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2020-10-23 18:42:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:05,272 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-23 18:42:05,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-23 18:42:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 18:42:05,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:05,273 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] [2020-10-23 18:42:05,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:05,276 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:05,277 INFO L82 PathProgramCache]: Analyzing trace with hash 20102003, now seen corresponding path program 1 times [2020-10-23 18:42:05,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:05,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220073679] [2020-10-23 18:42:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:05,347 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:05,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755504968] [2020-10-23 18:42:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:05,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 18:42:05,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:42:05,512 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 18:42:05,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220073679] [2020-10-23 18:42:05,513 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:42:05,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755504968] [2020-10-23 18:42:05,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:05,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:42:05,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61818485] [2020-10-23 18:42:05,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:42:05,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:05,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:42:05,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:05,516 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2020-10-23 18:42:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:05,610 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-23 18:42:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:42:05,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-23 18:42:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:05,613 INFO L225 Difference]: With dead ends: 61 [2020-10-23 18:42:05,613 INFO L226 Difference]: Without dead ends: 43 [2020-10-23 18:42:05,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-23 18:42:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-23 18:42:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 18:42:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-23 18:42:05,628 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-10-23 18:42:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:05,628 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-23 18:42:05,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:42:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-23 18:42:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 18:42:05,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:05,630 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 18:42:05,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:42:05,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash -968536487, now seen corresponding path program 1 times [2020-10-23 18:42:05,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:05,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525196615] [2020-10-23 18:42:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:05,867 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:05,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359093846] [2020-10-23 18:42:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:05,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:05,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:06,018 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:06,018 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:06,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:06,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:06 BoogieIcfgContainer [2020-10-23 18:42:06,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:06,279 INFO L168 Benchmark]: Toolchain (without parser) took 2476.11 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 114.7 MB in the end (delta: 16.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:06,280 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:06,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.29 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 121.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:06,282 INFO L168 Benchmark]: Boogie Preprocessor took 41.56 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:06,283 INFO L168 Benchmark]: RCFGBuilder took 469.37 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 102.7 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:06,283 INFO L168 Benchmark]: TraceAbstraction took 1692.94 ms. Allocated memory is still 156.2 MB. Free memory was 102.3 MB in the beginning and 114.7 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:06,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.29 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 121.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.56 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 469.37 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 102.7 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1692.94 ms. Allocated memory is still 156.2 MB. Free memory was 102.3 MB in the beginning and 114.7 MB in the end (delta: -12.4 MB). There was no memory consumed. 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)=16, 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 *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [\old(N)=0, a={1:0}, i=0, malloc(sizeof(long long)*N)={1:0}, N=1] [L30] COND TRUE i