/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/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:00:32,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:00:32,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:00:32,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:00:32,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:00:32,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:00:32,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:00:32,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:00:32,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:00:32,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:00:32,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:00:32,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:00:32,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:00:32,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:00:32,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:00:32,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:00:32,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:00:32,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:00:32,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:00:32,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:00:32,723 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:00:32,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:00:32,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:00:32,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:00:32,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:00:32,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:00:32,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:00:32,725 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:00:33,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:00:33,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:00:33,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:00:33,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:00:33,201 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:00:33,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-10-23 22:00:33,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a5f6c13/112fa081a370409787c61f2eefed5fee/FLAG0e41155a7 [2020-10-23 22:00:33,958 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:00:33,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-10-23 22:00:33,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a5f6c13/112fa081a370409787c61f2eefed5fee/FLAG0e41155a7 [2020-10-23 22:00:34,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a5f6c13/112fa081a370409787c61f2eefed5fee [2020-10-23 22:00:34,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:00:34,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:00:34,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:00:34,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:00:34,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:00:34,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9d0f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34, skipping insertion in model container [2020-10-23 22:00:34,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:00:34,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:00:34,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:00:34,649 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:00:34,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:00:34,709 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:00:34,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34 WrapperNode [2020-10-23 22:00:34,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:00:34,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:00:34,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:00:34,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:00:34,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... [2020-10-23 22:00:34,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:00:34,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:00:34,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:00:34,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:00:34,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:00:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:00:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:00:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:00:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:00:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:00:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:00:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:00:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:00:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:00:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:00:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:00:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:00:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:00:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:00:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:00:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:00:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:00:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:00:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:00:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:00:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:00:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:00:35,222 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:00:35,223 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 22:00:35,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:00:35 BoogieIcfgContainer [2020-10-23 22:00:35,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:00:35,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:00:35,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:00:35,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:00:35,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:00:34" (1/3) ... [2020-10-23 22:00:35,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28016bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:00:35, skipping insertion in model container [2020-10-23 22:00:35,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:00:34" (2/3) ... [2020-10-23 22:00:35,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28016bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:00:35, skipping insertion in model container [2020-10-23 22:00:35,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:00:35" (3/3) ... [2020-10-23 22:00:35,234 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-10-23 22:00:35,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:00:35,260 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:00:35,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:00:35,348 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:00:35,348 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:00:35,348 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:00:35,349 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:00:35,349 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:00:35,349 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:00:35,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:00:35,349 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:00:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-23 22:00:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 22:00:35,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:35,384 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] [2020-10-23 22:00:35,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:35,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1439685491, now seen corresponding path program 1 times [2020-10-23 22:00:35,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:35,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954547634] [2020-10-23 22:00:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:35,483 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:35,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954547634] [2020-10-23 22:00:35,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:35,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 22:00:35,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968865874] [2020-10-23 22:00:35,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 22:00:35,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:35,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 22:00:35,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:00:35,722 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-23 22:00:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:35,837 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2020-10-23 22:00:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 22:00:35,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-23 22:00:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:35,851 INFO L225 Difference]: With dead ends: 90 [2020-10-23 22:00:35,852 INFO L226 Difference]: Without dead ends: 57 [2020-10-23 22:00:35,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:00:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-23 22:00:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-23 22:00:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-23 22:00:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-23 22:00:35,972 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2020-10-23 22:00:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:35,973 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-23 22:00:35,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 22:00:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-23 22:00:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 22:00:35,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:35,975 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] [2020-10-23 22:00:35,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:00:35,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:35,977 INFO L82 PathProgramCache]: Analyzing trace with hash -563113616, now seen corresponding path program 1 times [2020-10-23 22:00:35,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:35,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090889396] [2020-10-23 22:00:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:35,981 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:36,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:36,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090889396] [2020-10-23 22:00:36,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:36,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:00:36,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671360403] [2020-10-23 22:00:36,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:00:36,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:36,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:00:36,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 22:00:36,126 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 6 states. [2020-10-23 22:00:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:36,494 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-10-23 22:00:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:00:36,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-23 22:00:36,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:36,497 INFO L225 Difference]: With dead ends: 78 [2020-10-23 22:00:36,497 INFO L226 Difference]: Without dead ends: 60 [2020-10-23 22:00:36,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:00:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-23 22:00:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-23 22:00:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-23 22:00:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-23 22:00:36,519 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 36 [2020-10-23 22:00:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:36,523 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-23 22:00:36,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:00:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-23 22:00:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-23 22:00:36,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:36,525 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:36,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:00:36,526 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:36,527 INFO L82 PathProgramCache]: Analyzing trace with hash -115429657, now seen corresponding path program 1 times [2020-10-23 22:00:36,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:36,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684466898] [2020-10-23 22:00:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:36,629 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:36,631 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:36,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684466898] [2020-10-23 22:00:36,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:36,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:00:36,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018507141] [2020-10-23 22:00:36,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:00:36,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:36,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:00:36,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:00:36,797 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 8 states. [2020-10-23 22:00:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:37,311 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-10-23 22:00:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:00:37,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-23 22:00:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:37,314 INFO L225 Difference]: With dead ends: 99 [2020-10-23 22:00:37,314 INFO L226 Difference]: Without dead ends: 95 [2020-10-23 22:00:37,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:00:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-23 22:00:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2020-10-23 22:00:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-23 22:00:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-23 22:00:37,336 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 46 [2020-10-23 22:00:37,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:37,337 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-23 22:00:37,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:00:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-23 22:00:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-23 22:00:37,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:37,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:37,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:00:37,339 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:37,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1489312715, now seen corresponding path program 1 times [2020-10-23 22:00:37,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:37,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820122825] [2020-10-23 22:00:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:37,417 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:37,420 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:37,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820122825] [2020-10-23 22:00:37,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:37,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:00:37,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24267841] [2020-10-23 22:00:37,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:00:37,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:37,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:00:37,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:00:37,625 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 8 states. [2020-10-23 22:00:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:38,123 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-23 22:00:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:00:38,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-23 22:00:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:38,127 INFO L225 Difference]: With dead ends: 116 [2020-10-23 22:00:38,127 INFO L226 Difference]: Without dead ends: 112 [2020-10-23 22:00:38,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:00:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-23 22:00:38,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-23 22:00:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-23 22:00:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2020-10-23 22:00:38,153 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 47 [2020-10-23 22:00:38,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:38,153 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2020-10-23 22:00:38,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:00:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2020-10-23 22:00:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-23 22:00:38,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:38,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:38,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:00:38,156 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:38,157 INFO L82 PathProgramCache]: Analyzing trace with hash -196114581, now seen corresponding path program 1 times [2020-10-23 22:00:38,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:38,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246921382] [2020-10-23 22:00:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:38,230 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:38,232 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:38,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:38,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246921382] [2020-10-23 22:00:38,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:38,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:00:38,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185344735] [2020-10-23 22:00:38,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:00:38,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:00:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:00:38,350 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 8 states. [2020-10-23 22:00:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:38,887 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2020-10-23 22:00:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:00:38,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-23 22:00:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:38,890 INFO L225 Difference]: With dead ends: 127 [2020-10-23 22:00:38,890 INFO L226 Difference]: Without dead ends: 123 [2020-10-23 22:00:38,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-23 22:00:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-23 22:00:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2020-10-23 22:00:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-23 22:00:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2020-10-23 22:00:38,917 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 47 [2020-10-23 22:00:38,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:38,918 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2020-10-23 22:00:38,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:00:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2020-10-23 22:00:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-23 22:00:38,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:38,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1] [2020-10-23 22:00:38,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:00:38,920 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2099559550, now seen corresponding path program 1 times [2020-10-23 22:00:38,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:38,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929682768] [2020-10-23 22:00:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:39,687 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:39,691 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:39,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929682768] [2020-10-23 22:00:39,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:39,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:00:39,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341290802] [2020-10-23 22:00:39,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:00:39,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:39,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:00:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:00:39,863 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand 7 states. [2020-10-23 22:00:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:40,268 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-10-23 22:00:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 22:00:40,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-23 22:00:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:40,270 INFO L225 Difference]: With dead ends: 135 [2020-10-23 22:00:40,271 INFO L226 Difference]: Without dead ends: 66 [2020-10-23 22:00:40,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-23 22:00:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-23 22:00:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-23 22:00:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-23 22:00:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-23 22:00:40,311 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 57 [2020-10-23 22:00:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:40,312 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-23 22:00:40,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:00:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-23 22:00:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 22:00:40,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:40,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:40,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:00:40,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:40,317 INFO L82 PathProgramCache]: Analyzing trace with hash -855406281, now seen corresponding path program 1 times [2020-10-23 22:00:40,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:40,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005078281] [2020-10-23 22:00:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:40,478 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:40,480 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 22:00:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:40,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005078281] [2020-10-23 22:00:40,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:40,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:00:40,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165246060] [2020-10-23 22:00:40,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:00:40,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:00:40,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:00:40,618 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 10 states. [2020-10-23 22:00:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:41,236 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-10-23 22:00:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 22:00:41,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-23 22:00:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:41,239 INFO L225 Difference]: With dead ends: 93 [2020-10-23 22:00:41,239 INFO L226 Difference]: Without dead ends: 89 [2020-10-23 22:00:41,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-23 22:00:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-23 22:00:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-10-23 22:00:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-23 22:00:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-23 22:00:41,275 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 58 [2020-10-23 22:00:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:41,275 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-23 22:00:41,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:00:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-23 22:00:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-23 22:00:41,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:41,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:41,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:00:41,284 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:41,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1759920101, now seen corresponding path program 1 times [2020-10-23 22:00:41,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:41,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138183117] [2020-10-23 22:00:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:41,430 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:41,432 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 22:00:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:41,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138183117] [2020-10-23 22:00:41,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:41,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:00:41,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248048935] [2020-10-23 22:00:41,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:00:41,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:41,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:00:41,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:00:41,587 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 10 states. [2020-10-23 22:00:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:42,331 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2020-10-23 22:00:42,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 22:00:42,331 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-23 22:00:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:42,333 INFO L225 Difference]: With dead ends: 107 [2020-10-23 22:00:42,333 INFO L226 Difference]: Without dead ends: 103 [2020-10-23 22:00:42,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-23 22:00:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-23 22:00:42,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2020-10-23 22:00:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-23 22:00:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-23 22:00:42,351 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 59 [2020-10-23 22:00:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:42,352 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-23 22:00:42,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:00:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-23 22:00:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-23 22:00:42,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:42,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:42,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:00:42,353 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:42,354 INFO L82 PathProgramCache]: Analyzing trace with hash 155171771, now seen corresponding path program 1 times [2020-10-23 22:00:42,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:42,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081524621] [2020-10-23 22:00:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:42,501 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:42,503 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:42,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 22:00:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:42,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081524621] [2020-10-23 22:00:42,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:42,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:00:42,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565213779] [2020-10-23 22:00:42,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:00:42,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:42,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:00:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:00:42,644 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 10 states. [2020-10-23 22:00:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:43,353 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2020-10-23 22:00:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 22:00:43,354 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-23 22:00:43,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:43,355 INFO L225 Difference]: With dead ends: 105 [2020-10-23 22:00:43,355 INFO L226 Difference]: Without dead ends: 101 [2020-10-23 22:00:43,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-23 22:00:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-23 22:00:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2020-10-23 22:00:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-23 22:00:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-23 22:00:43,382 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 59 [2020-10-23 22:00:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:43,383 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-23 22:00:43,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:00:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-23 22:00:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-23 22:00:43,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:00:43,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-10-23 22:00:43,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 22:00:43,385 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:00:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:00:43,385 INFO L82 PathProgramCache]: Analyzing trace with hash 123956103, now seen corresponding path program 2 times [2020-10-23 22:00:43,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:00:43,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392215335] [2020-10-23 22:00:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:00:43,977 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:00:43,979 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:00:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:00:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 22:00:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:00:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:00:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:00:44,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392215335] [2020-10-23 22:00:44,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:00:44,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:00:44,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237292883] [2020-10-23 22:00:44,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:00:44,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:00:44,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:00:44,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:00:44,077 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 7 states. [2020-10-23 22:00:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:00:44,437 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-23 22:00:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 22:00:44,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-23 22:00:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:00:44,439 INFO L225 Difference]: With dead ends: 76 [2020-10-23 22:00:44,439 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:00:44,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-23 22:00:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:00:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:00:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:00:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:00:44,441 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2020-10-23 22:00:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:00:44,441 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:00:44,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:00:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:00:44,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:00:44,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 22:00:44,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:00:45,545 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 23 [2020-10-23 22:00:45,684 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 23 [2020-10-23 22:00:46,916 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-10-23 22:00:47,138 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,138 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,138 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,138 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,138 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,139 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,139 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:47,139 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:47,139 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,139 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,139 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,139 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,140 INFO L270 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)|)) [2020-10-23 22:00:47,140 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:00:47,140 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:00:47,140 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:00:47,140 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:00:47,140 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:00:47,140 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:00:47,141 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 22:00:47,141 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 22:00:47,141 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:00:47,141 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:00:47,141 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:00:47,141 INFO L270 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,141 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,142 INFO L277 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: true [2020-10-23 22:00:47,142 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-10-23 22:00:47,142 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 52) the Hoare annotation is: true [2020-10-23 22:00:47,142 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (= main_~j~0 0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,142 INFO L270 CegarLoopResult]: At program point L48-1(line 48) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,142 INFO L270 CegarLoopResult]: At program point L40(lines 40 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,143 INFO L270 CegarLoopResult]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 (<= main_~n~0 1) .cse2))) [2020-10-23 22:00:47,143 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,143 INFO L270 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,143 INFO L270 CegarLoopResult]: At program point L36-2(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,143 INFO L270 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,143 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,143 INFO L270 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,144 INFO L277 CegarLoopResult]: At program point L24(lines 24 52) the Hoare annotation is: true [2020-10-23 22:00:47,144 INFO L270 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,144 INFO L270 CegarLoopResult]: At program point L49-1(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,144 INFO L270 CegarLoopResult]: At program point L49-2(line 49) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 1999 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,144 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,144 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,145 INFO L277 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-10-23 22:00:47,145 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,145 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,145 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,145 INFO L270 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,145 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-23 22:00:47,146 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 52) the Hoare annotation is: true [2020-10-23 22:00:47,146 INFO L270 CegarLoopResult]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 1 main_~i~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= main_~n~0 1)) (.cse4 (<= 10000 main_~c3~0)) (.cse5 (= main_~j~0 0))) (or (and (<= main_~n~0 main_~j~0) .cse0 .cse1 (<= 1999 main_~k~0) .cse2 .cse3 .cse4) (and .cse0 .cse1 (<= 2000 main_~k~0) .cse5 .cse2 .cse3 .cse4) (and (<= main_~n~0 0) (= main_~i~0 0) .cse5))) [2020-10-23 22:00:47,146 INFO L277 CegarLoopResult]: At program point L46-3(lines 46 50) the Hoare annotation is: true [2020-10-23 22:00:47,146 INFO L270 CegarLoopResult]: At program point L38(lines 38 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,146 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 44) the Hoare annotation is: (or (and (<= main_~n~0 0) (= main_~i~0 0)) (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0))) [2020-10-23 22:00:47,146 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,147 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2020-10-23 22:00:47,147 INFO L270 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,147 INFO L270 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,147 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= 4000 main_~c1~0) [2020-10-23 22:00:47,147 INFO L270 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,147 INFO L270 CegarLoopResult]: At program point L47-1(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (= main_~j~0 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,148 INFO L270 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,148 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,148 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,148 INFO L270 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-10-23 22:00:47,148 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:00:47,148 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 22:00:47,149 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:00:47,149 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:00:47,149 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:00:47,149 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:00:47,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:00:47 BoogieIcfgContainer [2020-10-23 22:00:47,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:00:47,174 INFO L168 Benchmark]: Toolchain (without parser) took 12849.20 ms. Allocated memory was 154.1 MB in the beginning and 269.5 MB in the end (delta: 115.3 MB). Free memory was 129.8 MB in the beginning and 138.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 154.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:47,175 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:00:47,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.18 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 119.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:47,176 INFO L168 Benchmark]: Boogie Preprocessor took 66.45 ms. Allocated memory is still 154.1 MB. Free memory was 119.5 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:47,177 INFO L168 Benchmark]: RCFGBuilder took 446.45 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 132.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:47,178 INFO L168 Benchmark]: TraceAbstraction took 11945.23 ms. Allocated memory was 154.1 MB in the beginning and 269.5 MB in the end (delta: 115.3 MB). Free memory was 132.3 MB in the beginning and 138.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 156.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:00:47,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 379.18 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 119.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.45 ms. Allocated memory is still 154.1 MB. Free memory was 119.5 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 446.45 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 132.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11945.23 ms. Allocated memory was 154.1 MB in the beginning and 269.5 MB in the end (delta: 115.3 MB). Free memory was 132.3 MB in the beginning and 138.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 156.4 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: 34]: Loop Invariant Derived loop invariant: ((((4000 <= c1 && k == 0) && i == 0) && 2000 <= c2) && 10000 <= c3) || (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((n <= j && 4000 <= c1) && 1 <= i) && 1999 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) || ((((((4000 <= c1 && 1 <= i) && 2000 <= k) && j == 0) && 2000 <= c2) && n <= 1) && 10000 <= c3)) || ((n <= 0 && i == 0) && j == 0) - 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 630 SDtfs, 910 SDslu, 518 SDs, 0 SdLazy, 2101 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=5, 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, 10 MinimizatonAttempts, 120 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 68 LocationsWithAnnotation, 158 PreInvPairs, 191 NumberOfFragments, 702 HoareAnnotationTreeSize, 158 FomulaSimplifications, 21383 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 68 FomulaSimplificationsInter, 2334 FormulaSimplificationTreeSizeReductionInter, 1.9s 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...