/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:39:25,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:39:25,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:39:25,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 06:39:25,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:39:25,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:39:25,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:39:25,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:39:25,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:39:25,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:39:25,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:39:25,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:39:25,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:39:25,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:39:25,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:39:25,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:39:25,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:39:25,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:39:25,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:39:25,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:39:25,976 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 06:39:26,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:39:26,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:39:26,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:39:26,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:39:26,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:39:26,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:39:26,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:39:26,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:39:26,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:39:26,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:39:26,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:39:26,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:39:26,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:39:26,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:39:26,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:39:26,011 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:39:26,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:39:26,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:39:26,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:39:26,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:39:26,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:39:26,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:39:26,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:39:26,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:39:26,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:39:26,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:39:26,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:39:26,514 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:39:26,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-11-07 06:39:26,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817974bce/38fe0edb1d77414183798c48774c9dd5/FLAG91f359ac3 [2020-11-07 06:39:27,289 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:39:27,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2020-11-07 06:39:27,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817974bce/38fe0edb1d77414183798c48774c9dd5/FLAG91f359ac3 [2020-11-07 06:39:27,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817974bce/38fe0edb1d77414183798c48774c9dd5 [2020-11-07 06:39:27,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:39:27,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:39:27,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:39:27,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:39:27,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:39:27,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:39:27" (1/1) ... [2020-11-07 06:39:27,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6048d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:27, skipping insertion in model container [2020-11-07 06:39:27,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:39:27" (1/1) ... [2020-11-07 06:39:27,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:39:27,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:39:28,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:39:28,020 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:39:28,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:39:28,091 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:39:28,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28 WrapperNode [2020-11-07 06:39:28,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:39:28,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:39:28,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:39:28,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:39:28,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (1/1) ... [2020-11-07 06:39:28,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (1/1) ... [2020-11-07 06:39:28,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (1/1) ... [2020-11-07 06:39:28,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (1/1) ... [2020-11-07 06:39:28,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (1/1) ... [2020-11-07 06:39:28,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (1/1) ... [2020-11-07 06:39:28,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (1/1) ... [2020-11-07 06:39:28,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:39:28,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:39:28,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:39:28,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:39:28,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (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 06:39:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:39:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:39:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:39:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:39:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:39:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:39:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:39:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:39:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 06:39:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 06:39:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:39:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:39:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:39:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:39:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:39:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:39:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:39:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:39:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:39:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:39:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:39:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:39:28,878 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:39:28,878 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 06:39:28,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:39:28 BoogieIcfgContainer [2020-11-07 06:39:28,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:39:28,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:39:28,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:39:28,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:39:28,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:39:27" (1/3) ... [2020-11-07 06:39:28,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a18dd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:39:28, skipping insertion in model container [2020-11-07 06:39:28,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:28" (2/3) ... [2020-11-07 06:39:28,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a18dd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:39:28, skipping insertion in model container [2020-11-07 06:39:28,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:39:28" (3/3) ... [2020-11-07 06:39:28,897 INFO L111 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-11-07 06:39:28,916 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:39:28,920 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:39:28,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:39:28,962 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:39:28,963 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:39:28,963 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:39:28,963 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:39:28,963 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:39:28,963 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:39:28,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:39:28,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:39:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-11-07 06:39:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 06:39:28,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:28,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:28,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:29,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 858751077, now seen corresponding path program 1 times [2020-11-07 06:39:29,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:29,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105925156] [2020-11-07 06:39:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,448 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 06:39:29,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105925156] [2020-11-07 06:39:29,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:29,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:39:29,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468456230] [2020-11-07 06:39:29,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:39:29,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:29,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:39:29,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:39:29,475 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 6 states. [2020-11-07 06:39:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:30,152 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2020-11-07 06:39:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 06:39:30,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-11-07 06:39:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:30,165 INFO L225 Difference]: With dead ends: 104 [2020-11-07 06:39:30,166 INFO L226 Difference]: Without dead ends: 57 [2020-11-07 06:39:30,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:39:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-07 06:39:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-07 06:39:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 06:39:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-11-07 06:39:30,244 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 36 [2020-11-07 06:39:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:30,245 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-11-07 06:39:30,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:39:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-11-07 06:39:30,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 06:39:30,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:30,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:30,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:39:30,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:30,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:30,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2108867889, now seen corresponding path program 1 times [2020-11-07 06:39:30,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:30,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109654679] [2020-11-07 06:39:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:30,514 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 06:39:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:30,553 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 06:39:30,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109654679] [2020-11-07 06:39:30,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:30,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 06:39:30,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23758539] [2020-11-07 06:39:30,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:39:30,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:30,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:39:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:39:30,567 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 7 states. [2020-11-07 06:39:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:31,477 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-11-07 06:39:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:39:31,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-11-07 06:39:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:31,480 INFO L225 Difference]: With dead ends: 101 [2020-11-07 06:39:31,481 INFO L226 Difference]: Without dead ends: 97 [2020-11-07 06:39:31,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:39:31,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-07 06:39:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 68. [2020-11-07 06:39:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-07 06:39:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-11-07 06:39:31,509 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 38 [2020-11-07 06:39:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:31,510 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-11-07 06:39:31,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:39:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-11-07 06:39:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 06:39:31,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:31,513 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:31,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:39:31,513 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -819884979, now seen corresponding path program 1 times [2020-11-07 06:39:31,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:31,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787051522] [2020-11-07 06:39:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:31,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:31,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 06:39:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:31,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787051522] [2020-11-07 06:39:31,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:31,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:39:31,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918352594] [2020-11-07 06:39:31,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:39:31,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:39:31,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:39:31,666 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 6 states. [2020-11-07 06:39:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:32,130 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2020-11-07 06:39:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 06:39:32,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-11-07 06:39:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:32,136 INFO L225 Difference]: With dead ends: 97 [2020-11-07 06:39:32,136 INFO L226 Difference]: Without dead ends: 93 [2020-11-07 06:39:32,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:39:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-07 06:39:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-11-07 06:39:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-07 06:39:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2020-11-07 06:39:32,166 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 41 [2020-11-07 06:39:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:32,166 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2020-11-07 06:39:32,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:39:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2020-11-07 06:39:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 06:39:32,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:32,169 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:32,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:39:32,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:32,170 INFO L82 PathProgramCache]: Analyzing trace with hash 446664225, now seen corresponding path program 1 times [2020-11-07 06:39:32,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:32,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458780177] [2020-11-07 06:39:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:39:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:32,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458780177] [2020-11-07 06:39:32,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:32,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:39:32,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221463834] [2020-11-07 06:39:32,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:39:32,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:39:32,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:39:32,370 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 9 states. [2020-11-07 06:39:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:33,354 INFO L93 Difference]: Finished difference Result 148 states and 173 transitions. [2020-11-07 06:39:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 06:39:33,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-11-07 06:39:33,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:33,364 INFO L225 Difference]: With dead ends: 148 [2020-11-07 06:39:33,364 INFO L226 Difference]: Without dead ends: 144 [2020-11-07 06:39:33,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-11-07 06:39:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-07 06:39:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2020-11-07 06:39:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-07 06:39:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2020-11-07 06:39:33,422 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 47 [2020-11-07 06:39:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:33,423 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2020-11-07 06:39:33,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:39:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2020-11-07 06:39:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 06:39:33,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:33,432 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:33,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:39:33,434 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:33,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1244017404, now seen corresponding path program 1 times [2020-11-07 06:39:33,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:33,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558473079] [2020-11-07 06:39:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:33,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:33,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558473079] [2020-11-07 06:39:33,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:33,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 06:39:33,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274786064] [2020-11-07 06:39:33,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:39:33,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:33,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:39:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:39:33,589 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand 7 states. [2020-11-07 06:39:34,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:34,068 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2020-11-07 06:39:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:39:34,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-11-07 06:39:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:34,071 INFO L225 Difference]: With dead ends: 205 [2020-11-07 06:39:34,071 INFO L226 Difference]: Without dead ends: 137 [2020-11-07 06:39:34,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:39:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-07 06:39:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 97. [2020-11-07 06:39:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-07 06:39:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2020-11-07 06:39:34,100 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 47 [2020-11-07 06:39:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:34,101 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2020-11-07 06:39:34,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:39:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2020-11-07 06:39:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-07 06:39:34,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:34,103 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:34,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:39:34,103 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:34,104 INFO L82 PathProgramCache]: Analyzing trace with hash -668258906, now seen corresponding path program 1 times [2020-11-07 06:39:34,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:34,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931213553] [2020-11-07 06:39:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 06:39:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 06:39:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 06:39:34,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931213553] [2020-11-07 06:39:34,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:34,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 06:39:34,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552911062] [2020-11-07 06:39:34,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:39:34,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:34,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:39:34,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:39:34,302 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 9 states. [2020-11-07 06:39:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:35,045 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2020-11-07 06:39:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:39:35,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-11-07 06:39:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:35,048 INFO L225 Difference]: With dead ends: 122 [2020-11-07 06:39:35,048 INFO L226 Difference]: Without dead ends: 118 [2020-11-07 06:39:35,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-11-07 06:39:35,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-07 06:39:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 102. [2020-11-07 06:39:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-07 06:39:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-11-07 06:39:35,085 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 55 [2020-11-07 06:39:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:35,085 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-11-07 06:39:35,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:39:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-11-07 06:39:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-07 06:39:35,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:35,092 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 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 06:39:35,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 06:39:35,093 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:35,093 INFO L82 PathProgramCache]: Analyzing trace with hash 821148234, now seen corresponding path program 1 times [2020-11-07 06:39:35,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:35,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189020493] [2020-11-07 06:39:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:39:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:35,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-11-07 06:39:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 06:39:35,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189020493] [2020-11-07 06:39:35,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:35,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 06:39:35,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660239482] [2020-11-07 06:39:35,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:39:35,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:35,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:39:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:39:35,314 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 11 states. [2020-11-07 06:39:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:36,325 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2020-11-07 06:39:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 06:39:36,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-11-07 06:39:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:36,328 INFO L225 Difference]: With dead ends: 151 [2020-11-07 06:39:36,328 INFO L226 Difference]: Without dead ends: 147 [2020-11-07 06:39:36,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-11-07 06:39:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-11-07 06:39:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 85. [2020-11-07 06:39:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-07 06:39:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-11-07 06:39:36,351 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 59 [2020-11-07 06:39:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:36,351 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-11-07 06:39:36,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:39:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-11-07 06:39:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-07 06:39:36,352 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:36,353 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 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 06:39:36,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 06:39:36,353 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:36,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1543512790, now seen corresponding path program 1 times [2020-11-07 06:39:36,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:36,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655914055] [2020-11-07 06:39:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:36,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 06:39:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 06:39:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-11-07 06:39:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-07 06:39:36,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655914055] [2020-11-07 06:39:36,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:36,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 06:39:36,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239010890] [2020-11-07 06:39:36,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:39:36,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:36,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:39:36,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:39:36,533 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 11 states. [2020-11-07 06:39:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:37,526 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2020-11-07 06:39:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 06:39:37,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-11-07 06:39:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:37,528 INFO L225 Difference]: With dead ends: 107 [2020-11-07 06:39:37,528 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:39:37,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-11-07 06:39:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:39:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:39:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:39:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:39:37,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-11-07 06:39:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:37,531 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:39:37,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:39:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:39:37,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:39:37,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 06:39:37,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:39:38,894 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 19 [2020-11-07 06:39:39,323 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 14 [2020-11-07 06:39:39,435 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 15 [2020-11-07 06:39:40,102 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 14 [2020-11-07 06:39:40,462 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,462 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,462 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,462 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,462 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,463 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,463 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:39:40,463 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:39:40,463 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,463 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,463 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,464 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,469 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 06:39:40,469 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:39:40,469 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:39:40,470 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:39:40,470 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:39:40,470 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:39:40,470 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:39:40,470 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 06:39:40,470 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 06:39:40,470 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:39:40,471 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:39:40,471 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:39:40,476 INFO L262 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,477 INFO L262 CegarLoopResult]: At program point L35-3(line 35) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,477 INFO L269 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-11-07 06:39:40,477 INFO L269 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-11-07 06:39:40,477 INFO L269 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-11-07 06:39:40,477 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 48) the Hoare annotation is: true [2020-11-07 06:39:40,477 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,478 INFO L262 CegarLoopResult]: At program point L36-3(line 36) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ |main_#t~post8| 1) main_~n~0) (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~k~0 1) main_~n~0) (<= .cse0 |main_#t~post8|) (<= (+ main_~j~0 1) main_~n~0))) [2020-11-07 06:39:40,478 INFO L262 CegarLoopResult]: At program point L36-4(line 36) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ |main_#t~post8| 1) main_~n~0) (<= .cse0 main_~j~0) (<= .cse0 |main_#t~post8|) (<= (+ main_~j~0 1) main_~n~0) (<= (+ .cse0 1) main_~k~0) (<= main_~k~0 main_~n~0))) [2020-11-07 06:39:40,478 INFO L262 CegarLoopResult]: At program point L36-5(lines 36 38) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0))) [2020-11-07 06:39:40,478 INFO L269 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-11-07 06:39:40,478 INFO L269 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-11-07 06:39:40,478 INFO L262 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,479 INFO L262 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,479 INFO L262 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~k~0 1) main_~n~0) (<= (+ main_~j~0 1) main_~n~0))) [2020-11-07 06:39:40,480 INFO L262 CegarLoopResult]: At program point L37-1(lines 36 38) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~k~0 1) main_~n~0) (<= (+ main_~j~0 1) main_~n~0))) [2020-11-07 06:39:40,480 INFO L262 CegarLoopResult]: At program point L33-2(lines 33 45) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,480 INFO L262 CegarLoopResult]: At program point L33-3(line 33) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,480 INFO L269 CegarLoopResult]: At program point L29(lines 29 32) the Hoare annotation is: true [2020-11-07 06:39:40,480 INFO L262 CegarLoopResult]: At program point L33-4(line 33) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,480 INFO L262 CegarLoopResult]: At program point L29-1(lines 29 32) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,481 INFO L262 CegarLoopResult]: At program point L33-5(lines 33 45) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,481 INFO L269 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-07 06:39:40,481 INFO L269 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-11-07 06:39:40,481 INFO L269 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: true [2020-11-07 06:39:40,481 INFO L269 CegarLoopResult]: At program point L46(lines 24 48) the Hoare annotation is: true [2020-11-07 06:39:40,481 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 48) the Hoare annotation is: true [2020-11-07 06:39:40,482 INFO L262 CegarLoopResult]: At program point L42(lines 34 44) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,482 INFO L262 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,482 INFO L262 CegarLoopResult]: At program point L34-3(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= .cse0 |main_#t~post6|) (<= main_~k~0 main_~n~0))) [2020-11-07 06:39:40,482 INFO L262 CegarLoopResult]: At program point L34-4(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ .cse0 1) main_~j~0) (<= main_~n~0 main_~k~0) (<= .cse0 |main_#t~post6|) (<= main_~k~0 main_~n~0))) [2020-11-07 06:39:40,482 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 48) the Hoare annotation is: true [2020-11-07 06:39:40,483 INFO L262 CegarLoopResult]: At program point L34-5(lines 34 44) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,483 INFO L269 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-11-07 06:39:40,483 INFO L269 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-11-07 06:39:40,483 INFO L269 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-11-07 06:39:40,483 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,483 INFO L262 CegarLoopResult]: At program point L35-1(lines 35 43) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-11-07 06:39:40,484 INFO L262 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:39:40,484 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 06:39:40,484 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:39:40,484 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:39:40,484 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:39:40,484 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:39:40,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:39:40 BoogieIcfgContainer [2020-11-07 06:39:40,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:39:40,530 INFO L168 Benchmark]: Toolchain (without parser) took 12864.14 ms. Allocated memory was 151.0 MB in the beginning and 274.7 MB in the end (delta: 123.7 MB). Free memory was 127.9 MB in the beginning and 200.3 MB in the end (delta: -72.5 MB). Peak memory consumption was 128.8 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:40,531 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:39:40,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.34 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 117.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:40,532 INFO L168 Benchmark]: Boogie Preprocessor took 79.91 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:40,533 INFO L168 Benchmark]: RCFGBuilder took 706.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 98.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:40,537 INFO L168 Benchmark]: TraceAbstraction took 11629.90 ms. Allocated memory was 151.0 MB in the beginning and 274.7 MB in the end (delta: 123.7 MB). Free memory was 97.9 MB in the beginning and 200.3 MB in the end (delta: -102.4 MB). Peak memory consumption was 98.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:40,544 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 151.0 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 430.34 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 117.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.91 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 706.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 98.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11629.90 ms. Allocated memory was 151.0 MB in the beginning and 274.7 MB in the end (delta: 123.7 MB). Free memory was 97.9 MB in the beginning and 200.3 MB in the end (delta: -102.4 MB). Peak memory consumption was 98.4 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: 33]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (2 * i <= j && n <= k) && k <= n - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((2 * i <= j && 2 * i <= k) && j + 1 <= n) && k <= n - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.5s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 759 SDslu, 646 SDs, 0 SdLazy, 2251 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 203 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 63 LocationsWithAnnotation, 207 PreInvPairs, 292 NumberOfFragments, 454 HoareAnnotationTreeSize, 207 FomulaSimplifications, 207654 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 63 FomulaSimplificationsInter, 7218 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 387 NumberOfCodeBlocks, 387 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 51327 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/58 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...