/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/eca-rers2012/Problem01_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:27:41,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:27:41,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:27:41,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 23:27:41,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 23:27:41,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 23:27:41,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 23:27:41,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 23:27:41,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 23:27:41,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 23:27:41,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 23:27:41,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 23:27:41,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 23:27:41,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 23:27:41,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 23:27:41,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 23:27:41,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 23:27:41,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 23:27:41,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 23:27:41,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 23:27:41,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 23:27:41,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 23:27:41,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 23:27:41,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 23:27:41,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 23:27:41,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 23:27:41,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 23:27:41,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 23:27:41,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:27:41,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:27:41,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:27:41,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:27:41,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:27:41,647 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:27:41,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:27:41,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:27:41,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:27:41,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:27:41,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:27:41,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:27:41,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:27:41,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:27:41,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:27:41,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:27:41,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:27:41,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:27:41,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:27:41,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:27:41,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:27:41,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:27:41,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:27:41,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:27:41,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:27:41,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:27:41,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:27:41,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:27:42,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:27:42,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:27:42,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:27:42,030 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:27:42,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label29.c [2020-12-21 23:27:42,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b12e984f7/2cd13caa582a44b0b697c16039d6602d/FLAGb6c05ec90 [2020-12-21 23:27:42,819 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:27:42,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label29.c [2020-12-21 23:27:42,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b12e984f7/2cd13caa582a44b0b697c16039d6602d/FLAGb6c05ec90 [2020-12-21 23:27:43,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b12e984f7/2cd13caa582a44b0b697c16039d6602d [2020-12-21 23:27:43,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:27:43,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:27:43,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:27:43,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:27:43,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:27:43,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:43,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9b6767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43, skipping insertion in model container [2020-12-21 23:27:43,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:43,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:27:43,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:27:43,577 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label29.c[18109,18122] [2020-12-21 23:27:43,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:27:43,617 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:27:43,715 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label29.c[18109,18122] [2020-12-21 23:27:43,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:27:43,770 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:27:43,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43 WrapperNode [2020-12-21 23:27:43,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:27:43,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:27:43,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:27:43,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:27:43,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:43,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:43,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:27:43,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:27:43,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:27:43,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:27:43,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:43,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:43,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:43,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:44,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:44,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:44,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (1/1) ... [2020-12-21 23:27:44,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:27:44,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:27:44,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:27:44,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:27:44,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (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 [2020-12-21 23:27:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:27:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:27:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:27:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:27:45,617 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:27:45,617 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-21 23:27:45,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:27:45 BoogieIcfgContainer [2020-12-21 23:27:45,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:27:45,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:27:45,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:27:45,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:27:45,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:27:43" (1/3) ... [2020-12-21 23:27:45,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c05665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:27:45, skipping insertion in model container [2020-12-21 23:27:45,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:27:43" (2/3) ... [2020-12-21 23:27:45,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c05665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:27:45, skipping insertion in model container [2020-12-21 23:27:45,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:27:45" (3/3) ... [2020-12-21 23:27:45,628 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label29.c [2020-12-21 23:27:45,634 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:27:45,640 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:27:45,658 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:27:45,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:27:45,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:27:45,686 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:27:45,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:27:45,686 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:27:45,686 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:27:45,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:27:45,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:27:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-12-21 23:27:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-21 23:27:45,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:45,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:45,717 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:45,723 INFO L82 PathProgramCache]: Analyzing trace with hash 620620582, now seen corresponding path program 1 times [2020-12-21 23:27:45,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:45,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429696183] [2020-12-21 23:27:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:27:46,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429696183] [2020-12-21 23:27:46,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:46,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:27:46,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134557321] [2020-12-21 23:27:46,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:46,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:46,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:46,221 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-12-21 23:27:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:47,085 INFO L93 Difference]: Finished difference Result 528 states and 915 transitions. [2020-12-21 23:27:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:47,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-21 23:27:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:47,103 INFO L225 Difference]: With dead ends: 528 [2020-12-21 23:27:47,103 INFO L226 Difference]: Without dead ends: 266 [2020-12-21 23:27:47,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-21 23:27:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-21 23:27:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-21 23:27:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 386 transitions. [2020-12-21 23:27:47,173 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 386 transitions. Word has length 101 [2020-12-21 23:27:47,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:47,174 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 386 transitions. [2020-12-21 23:27:47,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 386 transitions. [2020-12-21 23:27:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-21 23:27:47,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:47,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:47,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:27:47,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:47,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1557749107, now seen corresponding path program 1 times [2020-12-21 23:27:47,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:47,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590429039] [2020-12-21 23:27:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:27:47,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590429039] [2020-12-21 23:27:47,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:47,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:27:47,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10050813] [2020-12-21 23:27:47,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:47,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:47,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:47,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:47,268 INFO L87 Difference]: Start difference. First operand 266 states and 386 transitions. Second operand 3 states. [2020-12-21 23:27:47,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:47,859 INFO L93 Difference]: Finished difference Result 792 states and 1153 transitions. [2020-12-21 23:27:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:47,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-21 23:27:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:47,866 INFO L225 Difference]: With dead ends: 792 [2020-12-21 23:27:47,867 INFO L226 Difference]: Without dead ends: 528 [2020-12-21 23:27:47,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-12-21 23:27:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2020-12-21 23:27:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-12-21 23:27:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 726 transitions. [2020-12-21 23:27:47,903 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 726 transitions. Word has length 107 [2020-12-21 23:27:47,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:47,903 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 726 transitions. [2020-12-21 23:27:47,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 726 transitions. [2020-12-21 23:27:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-21 23:27:47,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:47,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:47,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:27:47,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:47,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1541134986, now seen corresponding path program 1 times [2020-12-21 23:27:47,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:47,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349580810] [2020-12-21 23:27:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:27:48,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349580810] [2020-12-21 23:27:48,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:48,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:27:48,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493280758] [2020-12-21 23:27:48,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:48,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:48,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:48,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:48,057 INFO L87 Difference]: Start difference. First operand 528 states and 726 transitions. Second operand 3 states. [2020-12-21 23:27:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:48,632 INFO L93 Difference]: Finished difference Result 1578 states and 2173 transitions. [2020-12-21 23:27:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:48,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-21 23:27:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:48,639 INFO L225 Difference]: With dead ends: 1578 [2020-12-21 23:27:48,639 INFO L226 Difference]: Without dead ends: 1052 [2020-12-21 23:27:48,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-12-21 23:27:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-12-21 23:27:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-21 23:27:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1377 transitions. [2020-12-21 23:27:48,689 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1377 transitions. Word has length 122 [2020-12-21 23:27:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:48,689 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1377 transitions. [2020-12-21 23:27:48,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1377 transitions. [2020-12-21 23:27:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-21 23:27:48,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:48,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:48,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:27:48,694 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:48,695 INFO L82 PathProgramCache]: Analyzing trace with hash -767786909, now seen corresponding path program 1 times [2020-12-21 23:27:48,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:48,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10971297] [2020-12-21 23:27:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:27:48,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10971297] [2020-12-21 23:27:48,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:48,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:27:48,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273595944] [2020-12-21 23:27:48,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:48,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:48,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:48,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:48,803 INFO L87 Difference]: Start difference. First operand 1052 states and 1377 transitions. Second operand 3 states. [2020-12-21 23:27:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:49,328 INFO L93 Difference]: Finished difference Result 2888 states and 3786 transitions. [2020-12-21 23:27:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:49,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-21 23:27:49,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:49,340 INFO L225 Difference]: With dead ends: 2888 [2020-12-21 23:27:49,341 INFO L226 Difference]: Without dead ends: 1838 [2020-12-21 23:27:49,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-12-21 23:27:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1445. [2020-12-21 23:27:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2020-12-21 23:27:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1880 transitions. [2020-12-21 23:27:49,402 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1880 transitions. Word has length 127 [2020-12-21 23:27:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:49,405 INFO L481 AbstractCegarLoop]: Abstraction has 1445 states and 1880 transitions. [2020-12-21 23:27:49,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1880 transitions. [2020-12-21 23:27:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-21 23:27:49,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:49,411 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:49,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:27:49,411 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1109954633, now seen corresponding path program 1 times [2020-12-21 23:27:49,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:49,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955622927] [2020-12-21 23:27:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:27:49,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955622927] [2020-12-21 23:27:49,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:49,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:27:49,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321629621] [2020-12-21 23:27:49,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:27:49,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:49,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:27:49,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:27:49,567 INFO L87 Difference]: Start difference. First operand 1445 states and 1880 transitions. Second operand 4 states. [2020-12-21 23:27:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:50,465 INFO L93 Difference]: Finished difference Result 3281 states and 4241 transitions. [2020-12-21 23:27:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:27:50,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-12-21 23:27:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:50,478 INFO L225 Difference]: With dead ends: 3281 [2020-12-21 23:27:50,478 INFO L226 Difference]: Without dead ends: 1838 [2020-12-21 23:27:50,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:27:50,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-12-21 23:27:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1576. [2020-12-21 23:27:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-12-21 23:27:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1981 transitions. [2020-12-21 23:27:50,535 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1981 transitions. Word has length 129 [2020-12-21 23:27:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:50,535 INFO L481 AbstractCegarLoop]: Abstraction has 1576 states and 1981 transitions. [2020-12-21 23:27:50,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:27:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1981 transitions. [2020-12-21 23:27:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-21 23:27:50,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:50,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:50,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:27:50,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:50,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1564517898, now seen corresponding path program 1 times [2020-12-21 23:27:50,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:50,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892998943] [2020-12-21 23:27:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:27:50,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892998943] [2020-12-21 23:27:50,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:50,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:27:50,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061928561] [2020-12-21 23:27:50,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:50,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:50,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:50,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:50,690 INFO L87 Difference]: Start difference. First operand 1576 states and 1981 transitions. Second operand 3 states. [2020-12-21 23:27:51,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:51,189 INFO L93 Difference]: Finished difference Result 3412 states and 4276 transitions. [2020-12-21 23:27:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:51,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-12-21 23:27:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:51,200 INFO L225 Difference]: With dead ends: 3412 [2020-12-21 23:27:51,200 INFO L226 Difference]: Without dead ends: 1838 [2020-12-21 23:27:51,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-12-21 23:27:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1838. [2020-12-21 23:27:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-12-21 23:27:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2267 transitions. [2020-12-21 23:27:51,249 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2267 transitions. Word has length 130 [2020-12-21 23:27:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:51,249 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2267 transitions. [2020-12-21 23:27:51,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2267 transitions. [2020-12-21 23:27:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-21 23:27:51,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:51,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:51,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:27:51,255 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:51,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1921909311, now seen corresponding path program 1 times [2020-12-21 23:27:51,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:51,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344373480] [2020-12-21 23:27:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-21 23:27:51,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344373480] [2020-12-21 23:27:51,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:51,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:27:51,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088124061] [2020-12-21 23:27:51,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:51,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:51,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:51,374 INFO L87 Difference]: Start difference. First operand 1838 states and 2267 transitions. Second operand 3 states. [2020-12-21 23:27:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:52,047 INFO L93 Difference]: Finished difference Result 4067 states and 5021 transitions. [2020-12-21 23:27:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:52,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-21 23:27:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:52,062 INFO L225 Difference]: With dead ends: 4067 [2020-12-21 23:27:52,062 INFO L226 Difference]: Without dead ends: 2231 [2020-12-21 23:27:52,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-12-21 23:27:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1838. [2020-12-21 23:27:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-12-21 23:27:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2115 transitions. [2020-12-21 23:27:52,116 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2115 transitions. Word has length 133 [2020-12-21 23:27:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:52,116 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2115 transitions. [2020-12-21 23:27:52,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2115 transitions. [2020-12-21 23:27:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-21 23:27:52,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:52,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:52,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:27:52,123 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:52,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:52,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1099746882, now seen corresponding path program 1 times [2020-12-21 23:27:52,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:52,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440773007] [2020-12-21 23:27:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:27:52,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440773007] [2020-12-21 23:27:52,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827838584] [2020-12-21 23:27:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:27:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:52,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-21 23:27:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:27:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-21 23:27:52,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:27:52,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-12-21 23:27:52,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293934466] [2020-12-21 23:27:52,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:52,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:52,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:52,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:52,726 INFO L87 Difference]: Start difference. First operand 1838 states and 2115 transitions. Second operand 3 states. [2020-12-21 23:27:53,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:53,282 INFO L93 Difference]: Finished difference Result 4722 states and 5452 transitions. [2020-12-21 23:27:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:53,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-21 23:27:53,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:53,297 INFO L225 Difference]: With dead ends: 4722 [2020-12-21 23:27:53,297 INFO L226 Difference]: Without dead ends: 2886 [2020-12-21 23:27:53,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-12-21 23:27:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2624. [2020-12-21 23:27:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2020-12-21 23:27:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 2991 transitions. [2020-12-21 23:27:53,381 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 2991 transitions. Word has length 134 [2020-12-21 23:27:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:53,382 INFO L481 AbstractCegarLoop]: Abstraction has 2624 states and 2991 transitions. [2020-12-21 23:27:53,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 2991 transitions. [2020-12-21 23:27:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-21 23:27:53,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:53,388 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:53,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-21 23:27:53,603 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1391833337, now seen corresponding path program 1 times [2020-12-21 23:27:53,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:53,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116594431] [2020-12-21 23:27:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-21 23:27:53,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116594431] [2020-12-21 23:27:53,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:53,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:27:53,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811831926] [2020-12-21 23:27:53,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:27:53,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:53,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:27:53,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:27:53,673 INFO L87 Difference]: Start difference. First operand 2624 states and 2991 transitions. Second operand 4 states. [2020-12-21 23:27:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:54,358 INFO L93 Difference]: Finished difference Result 5246 states and 5980 transitions. [2020-12-21 23:27:54,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:27:54,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-12-21 23:27:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:54,379 INFO L225 Difference]: With dead ends: 5246 [2020-12-21 23:27:54,379 INFO L226 Difference]: Without dead ends: 2624 [2020-12-21 23:27:54,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:27:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-12-21 23:27:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2624. [2020-12-21 23:27:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2020-12-21 23:27:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 2970 transitions. [2020-12-21 23:27:54,451 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 2970 transitions. Word has length 137 [2020-12-21 23:27:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:54,451 INFO L481 AbstractCegarLoop]: Abstraction has 2624 states and 2970 transitions. [2020-12-21 23:27:54,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:27:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 2970 transitions. [2020-12-21 23:27:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-21 23:27:54,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:54,457 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:54,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:27:54,457 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:54,458 INFO L82 PathProgramCache]: Analyzing trace with hash -325750807, now seen corresponding path program 1 times [2020-12-21 23:27:54,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:54,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224052565] [2020-12-21 23:27:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-21 23:27:54,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224052565] [2020-12-21 23:27:54,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:27:54,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:27:54,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102999589] [2020-12-21 23:27:54,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:54,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:54,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:54,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:54,530 INFO L87 Difference]: Start difference. First operand 2624 states and 2970 transitions. Second operand 3 states. [2020-12-21 23:27:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:55,007 INFO L93 Difference]: Finished difference Result 6163 states and 6940 transitions. [2020-12-21 23:27:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:55,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-12-21 23:27:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:55,028 INFO L225 Difference]: With dead ends: 6163 [2020-12-21 23:27:55,029 INFO L226 Difference]: Without dead ends: 3541 [2020-12-21 23:27:55,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:27:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2020-12-21 23:27:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3148. [2020-12-21 23:27:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2020-12-21 23:27:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 3554 transitions. [2020-12-21 23:27:55,166 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 3554 transitions. Word has length 146 [2020-12-21 23:27:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:55,166 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 3554 transitions. [2020-12-21 23:27:55,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 3554 transitions. [2020-12-21 23:27:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-21 23:27:55,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:55,173 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:55,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-21 23:27:55,174 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:55,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:55,174 INFO L82 PathProgramCache]: Analyzing trace with hash -429296293, now seen corresponding path program 1 times [2020-12-21 23:27:55,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:55,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297382011] [2020-12-21 23:27:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-21 23:27:55,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297382011] [2020-12-21 23:27:55,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950925182] [2020-12-21 23:27:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:27:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:55,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-21 23:27:55,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:27:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-21 23:27:55,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:27:55,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-12-21 23:27:55,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204495244] [2020-12-21 23:27:55,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:55,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:55,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:55,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:55,724 INFO L87 Difference]: Start difference. First operand 3148 states and 3554 transitions. Second operand 3 states. [2020-12-21 23:27:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:56,260 INFO L93 Difference]: Finished difference Result 6294 states and 7106 transitions. [2020-12-21 23:27:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:56,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2020-12-21 23:27:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:56,276 INFO L225 Difference]: With dead ends: 6294 [2020-12-21 23:27:56,276 INFO L226 Difference]: Without dead ends: 3148 [2020-12-21 23:27:56,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2020-12-21 23:27:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 2624. [2020-12-21 23:27:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2020-12-21 23:27:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 2892 transitions. [2020-12-21 23:27:56,349 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 2892 transitions. Word has length 166 [2020-12-21 23:27:56,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:56,349 INFO L481 AbstractCegarLoop]: Abstraction has 2624 states and 2892 transitions. [2020-12-21 23:27:56,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 2892 transitions. [2020-12-21 23:27:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-12-21 23:27:56,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:56,357 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:27:56,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:27:56,573 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:56,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:56,575 INFO L82 PathProgramCache]: Analyzing trace with hash -534046697, now seen corresponding path program 1 times [2020-12-21 23:27:56,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:56,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682808748] [2020-12-21 23:27:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-21 23:27:56,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682808748] [2020-12-21 23:27:56,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742566867] [2020-12-21 23:27:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:27:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:56,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-21 23:27:56,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:27:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-21 23:27:57,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:27:57,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-12-21 23:27:57,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951762603] [2020-12-21 23:27:57,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:57,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:57,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:57,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:57,030 INFO L87 Difference]: Start difference. First operand 2624 states and 2892 transitions. Second operand 3 states. [2020-12-21 23:27:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:57,483 INFO L93 Difference]: Finished difference Result 5639 states and 6216 transitions. [2020-12-21 23:27:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:57,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2020-12-21 23:27:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:57,496 INFO L225 Difference]: With dead ends: 5639 [2020-12-21 23:27:57,497 INFO L226 Difference]: Without dead ends: 3017 [2020-12-21 23:27:57,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-12-21 23:27:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2755. [2020-12-21 23:27:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-12-21 23:27:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3026 transitions. [2020-12-21 23:27:57,556 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3026 transitions. Word has length 190 [2020-12-21 23:27:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:57,556 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3026 transitions. [2020-12-21 23:27:57,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3026 transitions. [2020-12-21 23:27:57,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-12-21 23:27:57,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:27:57,564 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-21 23:27:57,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-21 23:27:57,778 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:27:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:27:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1103240249, now seen corresponding path program 1 times [2020-12-21 23:27:57,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:27:57,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844731652] [2020-12-21 23:27:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:27:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 94 proven. 3 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-12-21 23:27:57,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844731652] [2020-12-21 23:27:57,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002161291] [2020-12-21 23:27:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:27:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:27:58,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-21 23:27:58,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:27:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-21 23:27:58,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:27:58,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-12-21 23:27:58,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002801246] [2020-12-21 23:27:58,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:27:58,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:27:58,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:27:58,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:58,363 INFO L87 Difference]: Start difference. First operand 2755 states and 3026 transitions. Second operand 3 states. [2020-12-21 23:27:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:27:58,887 INFO L93 Difference]: Finished difference Result 6161 states and 6749 transitions. [2020-12-21 23:27:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:27:58,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-12-21 23:27:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:27:58,889 INFO L225 Difference]: With dead ends: 6161 [2020-12-21 23:27:58,889 INFO L226 Difference]: Without dead ends: 0 [2020-12-21 23:27:58,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:27:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-21 23:27:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-21 23:27:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-21 23:27:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-21 23:27:58,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 230 [2020-12-21 23:27:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:27:58,896 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-21 23:27:58,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:27:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-21 23:27:58,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-21 23:27:59,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:27:59,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-21 23:27:59,513 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-12-21 23:27:59,776 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-12-21 23:27:59,780 INFO L189 CegarLoopUtils]: For program point L564(line 564) no Hoare annotation was computed. [2020-12-21 23:27:59,780 INFO L189 CegarLoopUtils]: For program point L531(line 531) no Hoare annotation was computed. [2020-12-21 23:27:59,780 INFO L189 CegarLoopUtils]: For program point L498(line 498) no Hoare annotation was computed. [2020-12-21 23:27:59,780 INFO L189 CegarLoopUtils]: For program point L465(line 465) no Hoare annotation was computed. [2020-12-21 23:27:59,780 INFO L189 CegarLoopUtils]: For program point L432(line 432) no Hoare annotation was computed. [2020-12-21 23:27:59,780 INFO L189 CegarLoopUtils]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-21 23:27:59,780 INFO L189 CegarLoopUtils]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L401(lines 401 403) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,781 INFO L189 CegarLoopUtils]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,782 INFO L189 CegarLoopUtils]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-21 23:27:59,782 INFO L189 CegarLoopUtils]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-21 23:27:59,782 INFO L189 CegarLoopUtils]: For program point L567(line 567) no Hoare annotation was computed. [2020-12-21 23:27:59,782 INFO L189 CegarLoopUtils]: For program point L534(line 534) no Hoare annotation was computed. [2020-12-21 23:27:59,783 INFO L189 CegarLoopUtils]: For program point L501(line 501) no Hoare annotation was computed. [2020-12-21 23:27:59,783 INFO L189 CegarLoopUtils]: For program point L468(line 468) no Hoare annotation was computed. [2020-12-21 23:27:59,783 INFO L189 CegarLoopUtils]: For program point L435(line 435) no Hoare annotation was computed. [2020-12-21 23:27:59,783 INFO L189 CegarLoopUtils]: For program point L402(line 402) no Hoare annotation was computed. [2020-12-21 23:27:59,783 INFO L189 CegarLoopUtils]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-21 23:27:59,783 INFO L189 CegarLoopUtils]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-21 23:27:59,784 INFO L189 CegarLoopUtils]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L570(line 570) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L537(line 537) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L504(line 504) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L471(line 471) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L438(line 438) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L405(line 405) no Hoare annotation was computed. [2020-12-21 23:27:59,785 INFO L189 CegarLoopUtils]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,786 INFO L189 CegarLoopUtils]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L573(line 573) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L540(line 540) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L507(line 507) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L474(line 474) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L441(line 441) no Hoare annotation was computed. [2020-12-21 23:27:59,787 INFO L189 CegarLoopUtils]: For program point L408(line 408) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,788 INFO L189 CegarLoopUtils]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L576(line 576) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L543(line 543) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L510(line 510) no Hoare annotation was computed. [2020-12-21 23:27:59,789 INFO L189 CegarLoopUtils]: For program point L477(line 477) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L444(line 444) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L411(line 411) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,790 INFO L189 CegarLoopUtils]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L579(line 579) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L546(line 546) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L513(line 513) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L480(line 480) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L447(line 447) no Hoare annotation was computed. [2020-12-21 23:27:59,791 INFO L189 CegarLoopUtils]: For program point L414(line 414) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,792 INFO L189 CegarLoopUtils]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L582(line 582) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L549(line 549) no Hoare annotation was computed. [2020-12-21 23:27:59,793 INFO L189 CegarLoopUtils]: For program point L516(line 516) no Hoare annotation was computed. [2020-12-21 23:27:59,794 INFO L189 CegarLoopUtils]: For program point L483(line 483) no Hoare annotation was computed. [2020-12-21 23:27:59,794 INFO L189 CegarLoopUtils]: For program point L450(line 450) no Hoare annotation was computed. [2020-12-21 23:27:59,794 INFO L189 CegarLoopUtils]: For program point L417(line 417) no Hoare annotation was computed. [2020-12-21 23:27:59,794 INFO L189 CegarLoopUtils]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-21 23:27:59,794 INFO L185 CegarLoopUtils]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (<= ~a7~0 0)) (.cse5 (= ~a21~0 1)) (.cse3 (<= ~a16~0 4)) (.cse0 (<= ~a17~0 0)) (.cse8 (<= 15 ~a8~0)) (.cse2 (<= ~a8~0 14)) (.cse7 (<= ~a16~0 5)) (.cse1 (= ~a20~0 1)) (.cse4 (= ~a17~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse4) (and .cse0 .cse6) (and .cse5 .cse3 .cse1 .cse4) (and .cse7 .cse0) (and .cse0 .cse8) (and (not (= ~a7~0 1)) .cse8 .cse4) (and .cse2 .cse7 (<= ~a21~0 0) .cse1 .cse4))) [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L552(line 552) no Hoare annotation was computed. [2020-12-21 23:27:59,795 INFO L189 CegarLoopUtils]: For program point L519(line 519) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L486(line 486) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L453(line 453) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L420(line 420) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-21 23:27:59,796 INFO L189 CegarLoopUtils]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-21 23:27:59,797 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-21 23:27:59,797 INFO L189 CegarLoopUtils]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-21 23:27:59,797 INFO L192 CegarLoopUtils]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-21 23:27:59,797 INFO L189 CegarLoopUtils]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,797 INFO L189 CegarLoopUtils]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,797 INFO L189 CegarLoopUtils]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,797 INFO L189 CegarLoopUtils]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,797 INFO L189 CegarLoopUtils]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L555(line 555) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L522(line 522) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L489(line 489) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L456(line 456) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L423(line 423) no Hoare annotation was computed. [2020-12-21 23:27:59,798 INFO L189 CegarLoopUtils]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-21 23:27:59,799 INFO L189 CegarLoopUtils]: For program point L558(line 558) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L525(line 525) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L492(line 492) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L459(line 459) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L426(line 426) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-21 23:27:59,800 INFO L189 CegarLoopUtils]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-21 23:27:59,801 INFO L189 CegarLoopUtils]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-21 23:27:59,801 INFO L189 CegarLoopUtils]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,801 INFO L185 CegarLoopUtils]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (<= ~a7~0 0)) (.cse5 (= ~a21~0 1)) (.cse3 (<= ~a16~0 4)) (.cse0 (<= ~a17~0 0)) (.cse8 (<= 15 ~a8~0)) (.cse2 (<= ~a8~0 14)) (.cse7 (<= ~a16~0 5)) (.cse1 (= ~a20~0 1)) (.cse4 (= ~a17~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse4) (and .cse0 .cse6) (and .cse5 .cse3 .cse1 .cse4) (and .cse7 .cse0) (and .cse0 .cse8) (and (not (= ~a7~0 1)) .cse8 .cse4) (and .cse2 .cse7 (<= ~a21~0 0) .cse1 .cse4))) [2020-12-21 23:27:59,801 INFO L189 CegarLoopUtils]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,801 INFO L189 CegarLoopUtils]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,801 INFO L189 CegarLoopUtils]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,801 INFO L189 CegarLoopUtils]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 489) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point L561(line 561) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point L528(line 528) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point L495(line 495) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point L462(line 462) no Hoare annotation was computed. [2020-12-21 23:27:59,802 INFO L189 CegarLoopUtils]: For program point L429(line 429) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-21 23:27:59,803 INFO L189 CegarLoopUtils]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-21 23:27:59,804 INFO L189 CegarLoopUtils]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-21 23:27:59,804 INFO L189 CegarLoopUtils]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-21 23:27:59,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:27:59 BoogieIcfgContainer [2020-12-21 23:27:59,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:27:59,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:27:59,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:27:59,827 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:27:59,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:27:45" (3/4) ... [2020-12-21 23:27:59,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-21 23:27:59,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-21 23:27:59,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-21 23:27:59,857 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:27:59,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:28:00,011 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/eca-rers2012/Problem01_label29.c-witness.graphml [2020-12-21 23:28:00,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:28:00,013 INFO L168 Benchmark]: Toolchain (without parser) took 16916.53 ms. Allocated memory was 151.0 MB in the beginning and 431.0 MB in the end (delta: 280.0 MB). Free memory was 104.7 MB in the beginning and 180.7 MB in the end (delta: -76.0 MB). Peak memory consumption was 204.9 MB. Max. memory is 8.0 GB. [2020-12-21 23:28:00,014 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:28:00,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.56 ms. Allocated memory is still 151.0 MB. Free memory was 104.5 MB in the beginning and 111.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2020-12-21 23:28:00,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.24 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 127.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:28:00,015 INFO L168 Benchmark]: Boogie Preprocessor took 126.98 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 122.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:28:00,016 INFO L168 Benchmark]: RCFGBuilder took 1519.93 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 122.9 MB in the beginning and 103.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2020-12-21 23:28:00,016 INFO L168 Benchmark]: TraceAbstraction took 14204.85 ms. Allocated memory was 181.4 MB in the beginning and 431.0 MB in the end (delta: 249.6 MB). Free memory was 102.5 MB in the beginning and 195.4 MB in the end (delta: -92.9 MB). Peak memory consumption was 157.7 MB. Max. memory is 8.0 GB. [2020-12-21 23:28:00,016 INFO L168 Benchmark]: Witness Printer took 185.42 ms. Allocated memory is still 431.0 MB. Free memory was 195.4 MB in the beginning and 180.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-21 23:28:00,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 674.56 ms. Allocated memory is still 151.0 MB. Free memory was 104.5 MB in the beginning and 111.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 196.24 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 127.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 126.98 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 122.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1519.93 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 122.9 MB in the beginning and 103.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14204.85 ms. Allocated memory was 181.4 MB in the beginning and 431.0 MB in the end (delta: 249.6 MB). Free memory was 102.5 MB in the beginning and 195.4 MB in the end (delta: -92.9 MB). Peak memory consumption was 157.7 MB. Max. memory is 8.0 GB. * Witness Printer took 185.42 ms. Allocated memory is still 431.0 MB. Free memory was 195.4 MB in the beginning and 180.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 489]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((a17 <= 0 && a20 == 1) || ((a8 <= 14 && a16 <= 4) && a17 == 1)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (a17 <= 0 && a7 <= 0)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || (a16 <= 5 && a17 <= 0)) || (a17 <= 0 && 15 <= a8)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || ((((a8 <= 14 && a16 <= 5) && a21 <= 0) && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a17 <= 0 && a20 == 1) || ((a8 <= 14 && a16 <= 4) && a17 == 1)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (a17 <= 0 && a7 <= 0)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || (a16 <= 5 && a17 <= 0)) || (a17 <= 0 && 15 <= a8)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || ((((a8 <= 14 && a16 <= 5) && a21 <= 0) && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.4s, OverallIterations: 13, TraceHistogramMax: 5, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 831 SDtfs, 1674 SDslu, 75 SDs, 0 SdLazy, 4674 SolverSat, 731 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 749 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3148occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 2489 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 59 NumberOfFragments, 185 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3530 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 462 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2572 NumberOfCodeBlocks, 2572 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2555 ConstructedInterpolants, 0 QuantifiedInterpolants, 834827 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1470 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1315/1327 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...