/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/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:22,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:22,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:22,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:22,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:22,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:22,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:22,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:22,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:22,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:22,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:22,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:22,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:22,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:22,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:22,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:22,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:22,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:22,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:22,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:22,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:22,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:22,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:22,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:22,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:45:22,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:22,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:22,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:22,459 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 [2020-11-06 22:45:22,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:22,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:22,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:22,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:22,519 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:22,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:22,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:22,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:22,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:22,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:22,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:22,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:22,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:22,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:22,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:22,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:22,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:22,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:22,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:22,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:22,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:22,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:22,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:22,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:22,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:22,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:22,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:22,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:22,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:22,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:22,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:23,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:23,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:23,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:23,011 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:23,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-11-06 22:45:23,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a05c37c5c/5e4feb810d9043e6ac60857efb95171d/FLAGef0116b60 [2020-11-06 22:45:23,681 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:23,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2020-11-06 22:45:23,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a05c37c5c/5e4feb810d9043e6ac60857efb95171d/FLAGef0116b60 [2020-11-06 22:45:24,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a05c37c5c/5e4feb810d9043e6ac60857efb95171d [2020-11-06 22:45:24,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:24,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:24,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:24,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:24,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:24,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d90fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24, skipping insertion in model container [2020-11-06 22:45:24,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:24,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:24,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:24,268 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:24,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:24,304 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:24,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24 WrapperNode [2020-11-06 22:45:24,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:24,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:24,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:24,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:24,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (1/1) ... [2020-11-06 22:45:24,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:24,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:24,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:24,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:24,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (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 [2020-11-06 22:45:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-06 22:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:24,798 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:24,798 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:45:24,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:24 BoogieIcfgContainer [2020-11-06 22:45:24,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:24,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:24,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:24,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:24,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:24" (1/3) ... [2020-11-06 22:45:24,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2440ac80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:24, skipping insertion in model container [2020-11-06 22:45:24,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:24" (2/3) ... [2020-11-06 22:45:24,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2440ac80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:24, skipping insertion in model container [2020-11-06 22:45:24,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:24" (3/3) ... [2020-11-06 22:45:24,814 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-11-06 22:45:24,845 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:24,855 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:24,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:24,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:24,952 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:24,952 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:24,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:24,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:24,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:24,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:24,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-06 22:45:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:45:24,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:24,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:24,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:25,030 INFO L82 PathProgramCache]: Analyzing trace with hash 346045792, now seen corresponding path program 1 times [2020-11-06 22:45:25,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:25,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480282261] [2020-11-06 22:45:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:25,440 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-06 22:45:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:25,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480282261] [2020-11-06 22:45:25,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:25,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:45:25,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021425545] [2020-11-06 22:45:25,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:45:25,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:25,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:45:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:45:25,501 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-11-06 22:45:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:25,582 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-11-06 22:45:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:45:25,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-06 22:45:25,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:25,592 INFO L225 Difference]: With dead ends: 37 [2020-11-06 22:45:25,593 INFO L226 Difference]: Without dead ends: 14 [2020-11-06 22:45:25,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:45:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-06 22:45:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-06 22:45:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-06 22:45:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-11-06 22:45:25,645 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2020-11-06 22:45:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:25,646 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-11-06 22:45:25,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:45:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-11-06 22:45:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:45:25,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:25,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:25,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:45:25,648 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash 59754282, now seen corresponding path program 1 times [2020-11-06 22:45:25,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:25,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089545902] [2020-11-06 22:45:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:25,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:25,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:25,739 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:45:25,740 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:45:25,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:45:25,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:25 BoogieIcfgContainer [2020-11-06 22:45:25,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:25,768 INFO L168 Benchmark]: Toolchain (without parser) took 1718.96 ms. Allocated memory is still 162.5 MB. Free memory was 138.6 MB in the beginning and 120.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:25,769 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:25,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.65 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 128.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:25,771 INFO L168 Benchmark]: Boogie Preprocessor took 39.36 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:25,772 INFO L168 Benchmark]: RCFGBuilder took 454.54 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 114.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:25,773 INFO L168 Benchmark]: TraceAbstraction took 962.70 ms. Allocated memory is still 162.5 MB. Free memory was 113.8 MB in the beginning and 120.9 MB in the end (delta: -7.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:25,776 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 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.65 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 128.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.36 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 454.54 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 114.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 962.70 ms. Allocated memory is still 162.5 MB. Free memory was 113.8 MB in the beginning and 120.9 MB in the end (delta: -7.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int x=__VERIFIER_nondet_int(); [L17] int y=__VERIFIER_nondet_int(); [L18] int z=__VERIFIER_nondet_int(); [L20] COND FALSE !(x<100 && 100