/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:46:24,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:46:24,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:46:24,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:46:24,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:46:24,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:46:24,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:46:24,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:46:24,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:46:24,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:46:24,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:46:24,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:46:24,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:46:24,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:46:24,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:46:24,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:46:24,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:46:24,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:46:24,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:46:24,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:46:24,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:46:24,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:46:24,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:46:24,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:46:24,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:46:24,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:46:24,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:46:24,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:46:24,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:46:24,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:46:24,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:46:24,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:46:24,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:46:24,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:46:24,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:46:24,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:46:24,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:46:24,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:46:24,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:46:24,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:46:24,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:46:24,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:46:24,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:46:24,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:46:24,270 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:46:24,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:46:24,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:46:24,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:24,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:46:24,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:46:24,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:46:24,272 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:46:24,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:46:24,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:46:24,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:46:24,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:46:24,639 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:46:24,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-10-23 21:46:24,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57503664c/7d4ee7355ea14e2c805a54bc47b667f5/FLAGb6072de4c [2020-10-23 21:46:25,361 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:46:25,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c [2020-10-23 21:46:25,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57503664c/7d4ee7355ea14e2c805a54bc47b667f5/FLAGb6072de4c [2020-10-23 21:46:25,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57503664c/7d4ee7355ea14e2c805a54bc47b667f5 [2020-10-23 21:46:25,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:46:25,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:46:25,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:25,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:46:25,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:46:25,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:25" (1/1) ... [2020-10-23 21:46:25,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9ad935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:25, skipping insertion in model container [2020-10-23 21:46:25,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:25" (1/1) ... [2020-10-23 21:46:25,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:46:25,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:46:26,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:26,022 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:46:26,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:26,056 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:46:26,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26 WrapperNode [2020-10-23 21:46:26,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:26,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:46:26,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:46:26,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:46:26,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (1/1) ... [2020-10-23 21:46:26,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (1/1) ... [2020-10-23 21:46:26,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (1/1) ... [2020-10-23 21:46:26,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (1/1) ... [2020-10-23 21:46:26,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (1/1) ... [2020-10-23 21:46:26,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (1/1) ... [2020-10-23 21:46:26,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (1/1) ... [2020-10-23 21:46:26,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:46:26,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:46:26,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:46:26,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:46:26,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (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 21:46:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:46:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:46:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:46:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:46:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:46:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:46:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:46:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:46:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:46:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:46:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:46:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:46:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:46:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:46:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:46:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:46:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:46:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:46:26,781 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:46:26,782 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:46:26,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:26 BoogieIcfgContainer [2020-10-23 21:46:26,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:46:26,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:46:26,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:46:26,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:46:26,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:46:25" (1/3) ... [2020-10-23 21:46:26,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f637779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:26, skipping insertion in model container [2020-10-23 21:46:26,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:26" (2/3) ... [2020-10-23 21:46:26,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f637779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:26, skipping insertion in model container [2020-10-23 21:46:26,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:26" (3/3) ... [2020-10-23 21:46:26,799 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-10-23 21:46:26,812 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:46:26,818 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:46:26,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:46:26,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:46:26,869 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:46:26,869 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:46:26,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:46:26,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:46:26,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:46:26,870 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:46:26,870 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:46:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-23 21:46:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 21:46:26,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:26,905 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] [2020-10-23 21:46:26,905 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1471177189, now seen corresponding path program 1 times [2020-10-23 21:46:26,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:26,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690138154] [2020-10-23 21:46:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:27,016 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:27,292 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 21:46:27,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690138154] [2020-10-23 21:46:27,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:27,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:46:27,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363471873] [2020-10-23 21:46:27,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:46:27,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:27,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:46:27,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:46:27,318 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-23 21:46:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:27,441 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-10-23 21:46:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:46:27,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-23 21:46:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:27,451 INFO L225 Difference]: With dead ends: 59 [2020-10-23 21:46:27,451 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 21:46:27,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:46:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 21:46:27,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-23 21:46:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 21:46:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-23 21:46:27,497 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2020-10-23 21:46:27,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:27,498 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-23 21:46:27,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:46:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-23 21:46:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 21:46:27,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:27,500 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 21:46:27,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:46:27,500 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2057159976, now seen corresponding path program 1 times [2020-10-23 21:46:27,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:27,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873531140] [2020-10-23 21:46:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:27,505 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:46:27,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:46:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:46:27,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:46:27,627 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:46:27,627 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:46:27,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:46:27,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:46:27 BoogieIcfgContainer [2020-10-23 21:46:27,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:46:27,654 INFO L168 Benchmark]: Toolchain (without parser) took 1898.71 ms. Allocated memory is still 156.2 MB. Free memory was 113.0 MB in the beginning and 89.7 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:27,655 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:46:27,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.04 ms. Allocated memory is still 156.2 MB. Free memory was 112.3 MB in the beginning and 102.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:27,660 INFO L168 Benchmark]: Boogie Preprocessor took 35.30 ms. Allocated memory is still 156.2 MB. Free memory was 102.6 MB in the beginning and 101.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:27,661 INFO L168 Benchmark]: RCFGBuilder took 692.86 ms. Allocated memory is still 156.2 MB. Free memory was 101.1 MB in the beginning and 127.5 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:27,663 INFO L168 Benchmark]: TraceAbstraction took 857.80 ms. Allocated memory is still 156.2 MB. Free memory was 127.1 MB in the beginning and 89.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:27,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.04 ms. Allocated memory is still 156.2 MB. Free memory was 112.3 MB in the beginning and 102.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.30 ms. Allocated memory is still 156.2 MB. Free memory was 102.6 MB in the beginning and 101.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 692.86 ms. Allocated memory is still 156.2 MB. Free memory was 101.1 MB in the beginning and 127.5 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 857.80 ms. Allocated memory is still 156.2 MB. Free memory was 127.1 MB in the beginning and 89.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.7 MB. 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: [L15] int x=__VERIFIER_nondet_int(); [L15] int x=__VERIFIER_nondet_int(); [L16] int *p = &x; [L18] EXPR \read(x) [L18] COND FALSE !(x<100) [L21] CALL __VERIFIER_assert(0) [L6] COND TRUE !(cond) [L7] CALL reach_error() [L3] __assert_fail("0", "terminator_01.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 28 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 incorrect! Received shutdown request...