/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/bitvector/jain_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:18,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:18,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:18,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:18,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:18,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:18,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:18,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:18,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:18,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:18,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:18,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:18,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:18,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:18,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:18,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:18,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:18,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:18,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:18,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:18,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:18,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:18,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:18,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:18,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:18,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:18,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:18,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:18,682 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 17:56:18,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:18,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:18,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:18,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:18,713 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:18,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:18,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:18,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:18,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:18,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:18,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:18,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:18,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:18,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:18,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:18,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:18,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:18,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:18,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:18,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:18,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:18,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:18,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:18,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:18,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:18,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:18,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:18,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:18,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:18,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:19,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:19,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:19,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:19,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:19,156 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:19,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_1-1.c [2020-10-23 17:56:19,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a41ea5b/0f39021b36f749c4b95298c0f230ad1b/FLAGb94389647 [2020-10-23 17:56:19,793 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:19,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_1-1.c [2020-10-23 17:56:19,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a41ea5b/0f39021b36f749c4b95298c0f230ad1b/FLAGb94389647 [2020-10-23 17:56:20,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a41ea5b/0f39021b36f749c4b95298c0f230ad1b [2020-10-23 17:56:20,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:20,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:20,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:20,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:20,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:20,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be471ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20, skipping insertion in model container [2020-10-23 17:56:20,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:20,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:20,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:20,450 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:20,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:20,490 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:20,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20 WrapperNode [2020-10-23 17:56:20,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:20,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:20,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:20,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:20,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (1/1) ... [2020-10-23 17:56:20,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:20,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:20,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:20,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:20,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (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 17:56:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 17:56:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 17:56:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 17:56:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:20,977 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:20,978 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 17:56:20,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:20 BoogieIcfgContainer [2020-10-23 17:56:20,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:20,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:20,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:20,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:20,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:20" (1/3) ... [2020-10-23 17:56:20,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36969ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:20, skipping insertion in model container [2020-10-23 17:56:20,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:20" (2/3) ... [2020-10-23 17:56:20,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36969ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:20, skipping insertion in model container [2020-10-23 17:56:20,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:20" (3/3) ... [2020-10-23 17:56:20,995 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_1-1.c [2020-10-23 17:56:21,010 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:21,015 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:21,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:21,061 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:21,062 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:21,062 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:21,062 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:21,062 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:21,063 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:21,063 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:21,063 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:21,082 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-23 17:56:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 17:56:21,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:21,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:21,108 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:21,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1199457490, now seen corresponding path program 1 times [2020-10-23 17:56:21,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:21,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797634300] [2020-10-23 17:56:21,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:21,539 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 17:56:21,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797634300] [2020-10-23 17:56:21,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:21,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 17:56:21,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449378056] [2020-10-23 17:56:21,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 17:56:21,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:21,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 17:56:21,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:56:21,568 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 7 states. [2020-10-23 17:56:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:21,931 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-10-23 17:56:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 17:56:21,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-23 17:56:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:21,941 INFO L225 Difference]: With dead ends: 39 [2020-10-23 17:56:21,941 INFO L226 Difference]: Without dead ends: 22 [2020-10-23 17:56:21,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-23 17:56:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-23 17:56:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-23 17:56:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-23 17:56:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-23 17:56:22,036 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-10-23 17:56:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:22,038 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-23 17:56:22,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 17:56:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-23 17:56:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 17:56:22,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:22,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:22,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:22,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:22,041 INFO L82 PathProgramCache]: Analyzing trace with hash -680978417, now seen corresponding path program 1 times [2020-10-23 17:56:22,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:22,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316201003] [2020-10-23 17:56:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:56:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:22,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316201003] [2020-10-23 17:56:22,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904930438] [2020-10-23 17:56:22,311 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 17:56:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:22,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 17:56:22,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:56:26,746 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-23 17:56:26,894 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-23 17:56:28,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 17:56:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:28,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:56:28,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2020-10-23 17:56:28,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065603370] [2020-10-23 17:56:28,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 17:56:28,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:28,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 17:56:28,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=102, Unknown=1, NotChecked=0, Total=132 [2020-10-23 17:56:28,859 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 12 states. [2020-10-23 17:56:31,016 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 43 [2020-10-23 17:56:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:31,186 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-23 17:56:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 17:56:31,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-23 17:56:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:31,188 INFO L225 Difference]: With dead ends: 21 [2020-10-23 17:56:31,188 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 17:56:31,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=57, Invalid=182, Unknown=1, NotChecked=0, Total=240 [2020-10-23 17:56:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 17:56:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 17:56:31,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 17:56:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 17:56:31,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-23 17:56:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:31,191 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 17:56:31,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 17:56:31,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 17:56:31,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 17:56:31,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 17:56:31,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 17:56:35,674 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 36 DAG size of output: 13 [2020-10-23 17:56:35,807 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 17:56:35,807 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 17:56:35,808 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 17:56:35,808 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 17:56:35,809 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:56:35,809 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 17:56:35,809 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:56:35,809 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:56:35,809 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 17:56:35,810 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 17:56:35,810 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:56:35,811 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2020-10-23 17:56:35,811 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-10-23 17:56:35,811 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-10-23 17:56:35,812 INFO L270 CegarLoopResult]: At program point L23-1(lines 18 25) the Hoare annotation is: (and (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) (not (= (mod main_~y~0 4294967296) 0))) [2020-10-23 17:56:35,812 INFO L274 CegarLoopResult]: For program point L18-2(lines 18 25) no Hoare annotation was computed. [2020-10-23 17:56:35,812 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-10-23 17:56:35,812 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-23 17:56:35,813 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-23 17:56:35,813 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 17:56:35,813 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-23 17:56:35,813 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-23 17:56:35,814 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-23 17:56:35,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:35 BoogieIcfgContainer [2020-10-23 17:56:35,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:35,839 INFO L168 Benchmark]: Toolchain (without parser) took 15656.82 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.8 MB in the beginning and 164.9 MB in the end (delta: -36.1 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:35,840 INFO L168 Benchmark]: CDTParser took 1.48 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:35,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.25 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 119.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:35,841 INFO L168 Benchmark]: Boogie Preprocessor took 36.83 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:35,842 INFO L168 Benchmark]: RCFGBuilder took 451.70 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 105.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:35,843 INFO L168 Benchmark]: TraceAbstraction took 14850.12 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 105.5 MB in the beginning and 164.9 MB in the end (delta: -59.5 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:35,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.48 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.25 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 119.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.83 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 451.70 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 105.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14850.12 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 105.5 MB in the beginning and 164.9 MB in the end (delta: -59.5 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: y + 1 <= 2 * ((y + 1) / 2) && !(y % 4294967296 == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 29 SDslu, 43 SDs, 0 SdLazy, 65 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 18 NumberOfFragments, 69 HoareAnnotationTreeSize, 14 FomulaSimplifications, 130 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 226 FormulaSimplificationTreeSizeReductionInter, 4.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3313 SizeOfPredicates, 3 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...