/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/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:57:46,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:57:46,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:57:46,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:57:46,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:57:46,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:57:46,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:57:46,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:57:46,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:57:46,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:57:46,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:57:46,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:57:46,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:57:46,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:57:46,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:57:46,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:57:46,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:57:46,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:57:46,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:57:46,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:57:46,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:57:46,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:57:46,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:57:46,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:57:46,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:57:46,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:57:46,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:57:46,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:57:46,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:57:46,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:57:46,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:57:46,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:57:46,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:57:46,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:57:46,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:57:46,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:57:46,833 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:57:46,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:57:46,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:57:46,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:57:46,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:57:46,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:57:46,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:57:46,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:57:47,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:57:47,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:57:47,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:57:47,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:57:47,301 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:57:47,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2020-11-07 01:57:47,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56c15a2/fac4bf6aef484fb8bc018feafd1875c6/FLAG8ae8a36eb [2020-11-07 01:57:48,085 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:57:48,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2020-11-07 01:57:48,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56c15a2/fac4bf6aef484fb8bc018feafd1875c6/FLAG8ae8a36eb [2020-11-07 01:57:48,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56c15a2/fac4bf6aef484fb8bc018feafd1875c6 [2020-11-07 01:57:48,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:57:48,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:57:48,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:48,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:57:48,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:57:48,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fd55c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48, skipping insertion in model container [2020-11-07 01:57:48,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:57:48,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:57:48,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:48,725 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:57:48,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:48,759 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:57:48,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48 WrapperNode [2020-11-07 01:57:48,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:48,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:57:48,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:57:48,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:57:48,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (1/1) ... [2020-11-07 01:57:48,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:57:48,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:57:48,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:57:48,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:57:48,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (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 [2020-11-07 01:57:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:57:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:57:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:57:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:57:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:57:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:57:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:57:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 01:57:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 01:57:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:57:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:57:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:57:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:57:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:57:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:57:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:57:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:57:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:57:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:57:49,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:57:49,148 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 01:57:49,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:49 BoogieIcfgContainer [2020-11-07 01:57:49,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:57:49,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:57:49,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:57:49,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:57:49,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:48" (1/3) ... [2020-11-07 01:57:49,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4671581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:49, skipping insertion in model container [2020-11-07 01:57:49,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:48" (2/3) ... [2020-11-07 01:57:49,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4671581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:49, skipping insertion in model container [2020-11-07 01:57:49,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:49" (3/3) ... [2020-11-07 01:57:49,162 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2020-11-07 01:57:49,184 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:57:49,189 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:57:49,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:57:49,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:57:49,240 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:57:49,240 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:57:49,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:57:49,241 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:57:49,241 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:57:49,241 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:57:49,241 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:57:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-07 01:57:49,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 01:57:49,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:49,298 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] [2020-11-07 01:57:49,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:49,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:49,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1356775911, now seen corresponding path program 1 times [2020-11-07 01:57:49,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:49,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194825919] [2020-11-07 01:57:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:49,413 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:49,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194825919] [2020-11-07 01:57:49,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:49,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:57:49,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437821097] [2020-11-07 01:57:49,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:57:49,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:57:49,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:57:49,640 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-11-07 01:57:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:49,724 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-11-07 01:57:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:57:49,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-07 01:57:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:49,735 INFO L225 Difference]: With dead ends: 50 [2020-11-07 01:57:49,735 INFO L226 Difference]: Without dead ends: 27 [2020-11-07 01:57:49,739 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 [2020-11-07 01:57:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-07 01:57:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-07 01:57:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-07 01:57:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-07 01:57:49,789 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 21 [2020-11-07 01:57:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:49,790 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-07 01:57:49,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:57:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-07 01:57:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 01:57:49,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:49,792 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] [2020-11-07 01:57:49,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:57:49,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash -896925557, now seen corresponding path program 1 times [2020-11-07 01:57:49,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:49,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142714394] [2020-11-07 01:57:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:49,798 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:49,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142714394] [2020-11-07 01:57:49,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:49,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 01:57:49,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763815993] [2020-11-07 01:57:49,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 01:57:49,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:49,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 01:57:49,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 01:57:49,901 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-11-07 01:57:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:50,063 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-11-07 01:57:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 01:57:50,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-07 01:57:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:50,065 INFO L225 Difference]: With dead ends: 45 [2020-11-07 01:57:50,066 INFO L226 Difference]: Without dead ends: 32 [2020-11-07 01:57:50,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:57:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-07 01:57:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-11-07 01:57:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-07 01:57:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-11-07 01:57:50,082 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 21 [2020-11-07 01:57:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:50,082 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-07 01:57:50,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 01:57:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-11-07 01:57:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-07 01:57:50,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:50,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:57:50,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:57:50,084 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1043838685, now seen corresponding path program 1 times [2020-11-07 01:57:50,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:50,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880883503] [2020-11-07 01:57:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:52,328 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-11-07 01:57:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:52,752 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-11-07 01:57:53,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880883503] [2020-11-07 01:57:53,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:53,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 01:57:53,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673165492] [2020-11-07 01:57:53,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 01:57:53,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:53,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 01:57:53,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=59, Unknown=1, NotChecked=0, Total=90 [2020-11-07 01:57:53,940 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2020-11-07 01:57:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:56,111 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-11-07 01:57:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 01:57:56,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-11-07 01:57:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:56,113 INFO L225 Difference]: With dead ends: 47 [2020-11-07 01:57:56,114 INFO L226 Difference]: Without dead ends: 40 [2020-11-07 01:57:56,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=160, Unknown=1, NotChecked=0, Total=240 [2020-11-07 01:57:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-07 01:57:56,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-11-07 01:57:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 01:57:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-07 01:57:56,127 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 27 [2020-11-07 01:57:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:56,127 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-07 01:57:56,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 01:57:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-07 01:57:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 01:57:56,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:56,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:57:56,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:57:56,129 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:56,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2042526766, now seen corresponding path program 1 times [2020-11-07 01:57:56,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:56,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943566897] [2020-11-07 01:57:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:56,513 WARN L194 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-11-07 01:57:58,594 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:00,695 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:00,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:58:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:58:00,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943566897] [2020-11-07 01:58:00,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:58:00,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 01:58:00,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069867188] [2020-11-07 01:58:00,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 01:58:00,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:58:00,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 01:58:00,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-07 01:58:00,992 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2020-11-07 01:58:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:58:01,460 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-11-07 01:58:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 01:58:01,461 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-11-07 01:58:01,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:58:01,462 INFO L225 Difference]: With dead ends: 60 [2020-11-07 01:58:01,462 INFO L226 Difference]: Without dead ends: 47 [2020-11-07 01:58:01,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-11-07 01:58:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-07 01:58:01,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-11-07 01:58:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 01:58:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-07 01:58:01,476 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 32 [2020-11-07 01:58:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:58:01,477 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-07 01:58:01,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 01:58:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-07 01:58:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 01:58:01,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:58:01,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:58:01,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 01:58:01,479 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:58:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:58:01,480 INFO L82 PathProgramCache]: Analyzing trace with hash -920871293, now seen corresponding path program 2 times [2020-11-07 01:58:01,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:58:01,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498995847] [2020-11-07 01:58:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:58:01,766 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-11-07 01:58:03,839 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:06,054 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:06,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:58:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:58:06,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498995847] [2020-11-07 01:58:06,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:58:06,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 01:58:06,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235232713] [2020-11-07 01:58:06,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 01:58:06,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:58:06,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 01:58:06,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-11-07 01:58:06,384 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 15 states. [2020-11-07 01:58:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:58:07,055 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-11-07 01:58:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 01:58:07,056 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-11-07 01:58:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:58:07,058 INFO L225 Difference]: With dead ends: 69 [2020-11-07 01:58:07,059 INFO L226 Difference]: Without dead ends: 46 [2020-11-07 01:58:07,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2020-11-07 01:58:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-07 01:58:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-11-07 01:58:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-07 01:58:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-11-07 01:58:07,072 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 37 [2020-11-07 01:58:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:58:07,072 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-11-07 01:58:07,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 01:58:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-11-07 01:58:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 01:58:07,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:58:07,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:58:07,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 01:58:07,075 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:58:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:58:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1557427598, now seen corresponding path program 3 times [2020-11-07 01:58:07,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:58:07,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593495969] [2020-11-07 01:58:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:58:07,402 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-11-07 01:58:09,484 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:10,039 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:58:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:58:10,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593495969] [2020-11-07 01:58:10,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:58:10,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-11-07 01:58:10,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174512365] [2020-11-07 01:58:10,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 01:58:10,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:58:10,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 01:58:10,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-11-07 01:58:10,536 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 18 states. [2020-11-07 01:58:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:58:11,476 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-11-07 01:58:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 01:58:11,477 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-11-07 01:58:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:58:11,478 INFO L225 Difference]: With dead ends: 79 [2020-11-07 01:58:11,478 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 01:58:11,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 01:58:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 01:58:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-11-07 01:58:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-07 01:58:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-11-07 01:58:11,493 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 42 [2020-11-07 01:58:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:58:11,494 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-11-07 01:58:11,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 01:58:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-11-07 01:58:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 01:58:11,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:58:11,496 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:58:11,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 01:58:11,496 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:58:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:58:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2089663459, now seen corresponding path program 4 times [2020-11-07 01:58:11,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:58:11,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226290596] [2020-11-07 01:58:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:58:11,782 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-11-07 01:58:13,828 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:16,015 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:16,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:58:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:58:16,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226290596] [2020-11-07 01:58:16,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:58:16,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-11-07 01:58:16,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164603211] [2020-11-07 01:58:16,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-07 01:58:16,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:58:16,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-07 01:58:16,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-11-07 01:58:16,619 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 21 states. [2020-11-07 01:58:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:58:17,772 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2020-11-07 01:58:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 01:58:17,773 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 47 [2020-11-07 01:58:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:58:17,774 INFO L225 Difference]: With dead ends: 89 [2020-11-07 01:58:17,776 INFO L226 Difference]: Without dead ends: 56 [2020-11-07 01:58:17,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2020-11-07 01:58:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-07 01:58:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-11-07 01:58:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-07 01:58:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-07 01:58:17,806 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 47 [2020-11-07 01:58:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:58:17,806 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-07 01:58:17,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-07 01:58:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-07 01:58:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 01:58:17,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:58:17,813 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:58:17,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 01:58:17,813 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:58:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:58:17,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1900689134, now seen corresponding path program 5 times [2020-11-07 01:58:17,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:58:17,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998636134] [2020-11-07 01:58:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:58:18,120 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-11-07 01:58:20,195 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:22,373 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:58:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:58:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:58:25,273 WARN L194 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-07 01:58:25,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998636134] [2020-11-07 01:58:25,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:58:25,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-11-07 01:58:25,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267295486] [2020-11-07 01:58:25,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-07 01:58:25,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:58:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-07 01:58:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-11-07 01:58:25,280 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 27 states. [2020-11-07 01:58:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:58:26,735 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2020-11-07 01:58:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-07 01:58:26,736 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2020-11-07 01:58:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:58:26,737 INFO L225 Difference]: With dead ends: 90 [2020-11-07 01:58:26,737 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 01:58:26,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 10 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 01:58:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 01:58:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 01:58:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 01:58:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 01:58:26,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-11-07 01:58:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:58:26,742 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 01:58:26,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-07 01:58:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 01:58:26,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 01:58:26,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 01:58:26,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 01:58:27,506 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 8 [2020-11-07 01:58:27,616 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 6 [2020-11-07 01:58:27,802 INFO L262 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: (or (not (<= 9 main_~i~0)) (not (<= main_~i~0 9)) (not (= __VERIFIER_assert_~cond 0)) (not (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) [2020-11-07 01:58:27,802 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 01:58:27,802 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 01:58:27,802 INFO L262 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: (or (not (<= 9 main_~i~0)) (not (<= main_~i~0 9)) (not (= __VERIFIER_assert_~cond 0)) (not (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) [2020-11-07 01:58:27,803 INFO L262 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: (or (not (<= 9 main_~i~0)) (not (<= main_~i~0 9)) (not (= __VERIFIER_assert_~cond 0)) (not (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) [2020-11-07 01:58:27,803 INFO L262 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (or (not (<= 9 main_~i~0)) (not (<= main_~i~0 9)) (not (= __VERIFIER_assert_~cond 0)) (not (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) [2020-11-07 01:58:27,803 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:58:27,803 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 01:58:27,803 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 01:58:27,803 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 01:58:27,804 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 01:58:27,804 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 01:58:27,804 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 01:58:27,804 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 01:58:27,805 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:58:27,805 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:58:27,805 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:58:27,805 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 01:58:27,805 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 01:58:27,806 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2020-11-07 01:58:27,806 INFO L262 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (< main_~i~0 4) [2020-11-07 01:58:27,806 INFO L262 CegarLoopResult]: At program point L25(lines 25 26) the Hoare annotation is: (<= main_~i~0 8) [2020-11-07 01:58:27,806 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 22 29) the Hoare annotation is: true [2020-11-07 01:58:27,806 INFO L269 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-11-07 01:58:27,806 INFO L269 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-11-07 01:58:27,806 INFO L262 CegarLoopResult]: At program point L24-3(lines 24 27) the Hoare annotation is: (<= main_~i~0 8) [2020-11-07 01:58:27,807 INFO L262 CegarLoopResult]: At program point L24-4(line 24) the Hoare annotation is: (and (<= main_~i~0 8) (= |main_#t~post3| main_~i~0)) [2020-11-07 01:58:27,807 INFO L262 CegarLoopResult]: At program point L24-5(line 24) the Hoare annotation is: (and (<= |main_#t~post3| 8) (= (+ |main_#t~post3| 1) main_~i~0)) [2020-11-07 01:58:27,807 INFO L262 CegarLoopResult]: At program point L24-6(lines 24 27) the Hoare annotation is: (<= main_~i~0 9) [2020-11-07 01:58:27,807 INFO L262 CegarLoopResult]: At program point L24-7(lines 24 27) the Hoare annotation is: (and (<= 9 main_~i~0) (<= main_~i~0 9)) [2020-11-07 01:58:27,807 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 22 29) the Hoare annotation is: true [2020-11-07 01:58:27,807 INFO L262 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (or (not (<= 9 main_~i~0)) (not (<= main_~i~0 9)) (and (= __VERIFIER_assert_~cond 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (forall ((v_main_~sn~0_57 Int)) (not (= |__VERIFIER_assert_#in~cond| (ite (or (= 16 v_main_~sn~0_57) (= v_main_~sn~0_57 0)) 1 0))))) [2020-11-07 01:58:27,808 INFO L262 CegarLoopResult]: At program point L15(lines 15 17) the Hoare annotation is: (or (not (<= 9 main_~i~0)) (not (<= main_~i~0 9)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~sn~0_57 Int)) (not (= |__VERIFIER_assert_#in~cond| (ite (or (= 16 v_main_~sn~0_57) (= v_main_~sn~0_57 0)) 1 0))))) [2020-11-07 01:58:27,808 INFO L262 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (or (not (<= 9 main_~i~0)) (not (<= main_~i~0 9)) (forall ((v_main_~sn~0_57 Int)) (not (= |__VERIFIER_assert_#in~cond| (ite (or (= 16 v_main_~sn~0_57) (= v_main_~sn~0_57 0)) 1 0))))) [2020-11-07 01:58:27,808 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2020-11-07 01:58:27,808 INFO L269 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2020-11-07 01:58:27,808 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: true [2020-11-07 01:58:27,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:58:27 BoogieIcfgContainer [2020-11-07 01:58:27,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:58:27,829 INFO L168 Benchmark]: Toolchain (without parser) took 39367.33 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 117.5 MB in the beginning and 140.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 88.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:27,829 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 158.3 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:58:27,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.14 ms. Allocated memory is still 158.3 MB. Free memory was 116.8 MB in the beginning and 134.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:27,831 INFO L168 Benchmark]: Boogie Preprocessor took 76.16 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 142.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:27,832 INFO L168 Benchmark]: RCFGBuilder took 312.63 ms. Allocated memory is still 158.3 MB. Free memory was 142.5 MB in the beginning and 128.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:27,833 INFO L168 Benchmark]: TraceAbstraction took 38675.00 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 128.1 MB in the beginning and 140.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:27,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 158.3 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.14 ms. Allocated memory is still 158.3 MB. Free memory was 116.8 MB in the beginning and 134.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 76.16 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 142.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 312.63 ms. Allocated memory is still 158.3 MB. Free memory was 142.5 MB in the beginning and 128.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38675.00 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 128.1 MB in the beginning and 140.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 24]: Loop Invariant Derived loop invariant: i <= 9 - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: ((!(9 <= i) || !(i <= 9)) || !(cond == 0)) || !(\old(cond) == cond) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.5s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 213 SDtfs, 376 SDslu, 246 SDs, 0 SdLazy, 1255 SolverSat, 102 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 70 SyntacticMatches, 35 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 133 PreInvPairs, 186 NumberOfFragments, 229 HoareAnnotationTreeSize, 133 FomulaSimplifications, 14674 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 37 FomulaSimplificationsInter, 1765 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, 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 correct! Received shutdown request...