./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6029375071a37af887817933cb6d522f173528f0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:22:38,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:38,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:38,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:38,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:38,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:38,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:38,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:38,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:38,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:38,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:38,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:38,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:38,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:38,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:38,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:38,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:38,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:38,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:38,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:38,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:38,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:38,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:38,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:38,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:38,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:38,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:38,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:38,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:38,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:38,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:38,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:38,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:38,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:38,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:38,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:38,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:38,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:38,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:38,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:38,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:38,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:22:38,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:38,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:38,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:38,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:38,861 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:38,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:38,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:38,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:22:38,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:38,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:38,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:38,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:38,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:38,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:38,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:38,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:38,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:38,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:38,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:38,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:38,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:38,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:38,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:38,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:38,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:38,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:22:38,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:22:38,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:38,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:38,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6029375071a37af887817933cb6d522f173528f0 [2020-10-19 22:22:39,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:39,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:39,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:39,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:39,168 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:39,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-10-19 22:22:39,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109303744/0a3ec65901d24554b1716bc808ef3cae/FLAGe604b8c18 [2020-10-19 22:22:39,711 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:39,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-10-19 22:22:39,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109303744/0a3ec65901d24554b1716bc808ef3cae/FLAGe604b8c18 [2020-10-19 22:22:40,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109303744/0a3ec65901d24554b1716bc808ef3cae [2020-10-19 22:22:40,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:40,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:40,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:40,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:40,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:40,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb7820b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40, skipping insertion in model container [2020-10-19 22:22:40,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:40,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:40,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:40,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:40,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:40,606 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:40,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40 WrapperNode [2020-10-19 22:22:40,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:40,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:40,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:40,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:40,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:40,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:40,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:40,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:40,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... [2020-10-19 22:22:40,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:40,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:40,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:40,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:40,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:22:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:41,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:41,408 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-19 22:22:41,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:41 BoogieIcfgContainer [2020-10-19 22:22:41,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:41,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:41,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:41,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:41,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:40" (1/3) ... [2020-10-19 22:22:41,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ddca65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:41, skipping insertion in model container [2020-10-19 22:22:41,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:40" (2/3) ... [2020-10-19 22:22:41,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ddca65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:41, skipping insertion in model container [2020-10-19 22:22:41,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:41" (3/3) ... [2020-10-19 22:22:41,419 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-10-19 22:22:41,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:41,440 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:22:41,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:22:41,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:41,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:41,476 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:41,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:41,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:41,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:41,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:41,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-19 22:22:41,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:22:41,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:41,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:41,501 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:41,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-10-19 22:22:41,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:41,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240428124] [2020-10-19 22:22:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:41,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240428124] [2020-10-19 22:22:41,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:41,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:41,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54526390] [2020-10-19 22:22:41,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:41,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:41,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:41,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:41,761 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-19 22:22:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:41,813 INFO L93 Difference]: Finished difference Result 151 states and 252 transitions. [2020-10-19 22:22:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:41,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 22:22:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:41,830 INFO L225 Difference]: With dead ends: 151 [2020-10-19 22:22:41,830 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 22:22:41,834 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 [2020-10-19 22:22:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 22:22:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 22:22:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 22:22:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-10-19 22:22:41,885 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-10-19 22:22:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:41,886 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-10-19 22:22:41,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-10-19 22:22:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:22:41,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:41,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:41,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:22:41,888 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-10-19 22:22:41,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:41,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016128660] [2020-10-19 22:22:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016128660] [2020-10-19 22:22:42,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:42,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:22:42,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044962742] [2020-10-19 22:22:42,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:42,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:42,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:42,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:42,030 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-10-19 22:22:42,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:42,078 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-10-19 22:22:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:22:42,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 22:22:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:42,080 INFO L225 Difference]: With dead ends: 88 [2020-10-19 22:22:42,080 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 22:22:42,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:42,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 22:22:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 22:22:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 22:22:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-10-19 22:22:42,091 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-10-19 22:22:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:42,092 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-10-19 22:22:42,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-10-19 22:22:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:22:42,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:42,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:42,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:22:42,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:42,094 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-10-19 22:22:42,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:42,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476838210] [2020-10-19 22:22:42,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476838210] [2020-10-19 22:22:42,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:42,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:42,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909686165] [2020-10-19 22:22:42,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:42,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:42,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:42,220 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-10-19 22:22:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:42,338 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-10-19 22:22:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:42,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:22:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:42,341 INFO L225 Difference]: With dead ends: 119 [2020-10-19 22:22:42,342 INFO L226 Difference]: Without dead ends: 69 [2020-10-19 22:22:42,343 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 [2020-10-19 22:22:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-19 22:22:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-19 22:22:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-19 22:22:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-10-19 22:22:42,366 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-10-19 22:22:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:42,366 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-10-19 22:22:42,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-10-19 22:22:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:42,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:42,369 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] [2020-10-19 22:22:42,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:22:42,370 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-10-19 22:22:42,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:42,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139086007] [2020-10-19 22:22:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139086007] [2020-10-19 22:22:42,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:42,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:42,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712241512] [2020-10-19 22:22:42,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:42,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:42,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:42,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:42,454 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-10-19 22:22:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:42,497 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-10-19 22:22:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:42,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-19 22:22:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:42,499 INFO L225 Difference]: With dead ends: 129 [2020-10-19 22:22:42,499 INFO L226 Difference]: Without dead ends: 75 [2020-10-19 22:22:42,500 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 [2020-10-19 22:22:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-19 22:22:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-10-19 22:22:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 22:22:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-10-19 22:22:42,508 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-10-19 22:22:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:42,509 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-10-19 22:22:42,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-10-19 22:22:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 22:22:42,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:42,511 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] [2020-10-19 22:22:42,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:22:42,511 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-10-19 22:22:42,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:42,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890515242] [2020-10-19 22:22:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890515242] [2020-10-19 22:22:42,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:42,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:22:42,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011399445] [2020-10-19 22:22:42,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:42,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:42,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:42,608 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-10-19 22:22:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:42,723 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-10-19 22:22:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:22:42,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 22:22:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:42,725 INFO L225 Difference]: With dead ends: 136 [2020-10-19 22:22:42,725 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 22:22:42,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 22:22:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-10-19 22:22:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 22:22:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-10-19 22:22:42,733 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-10-19 22:22:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:42,734 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-10-19 22:22:42,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-10-19 22:22:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 22:22:42,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:42,736 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:42,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:22:42,736 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:42,737 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-10-19 22:22:42,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:42,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373593160] [2020-10-19 22:22:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373593160] [2020-10-19 22:22:42,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110103161] [2020-10-19 22:22:42,796 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 [2020-10-19 22:22:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:42,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:42,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:42,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:42,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-19 22:22:42,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081584699] [2020-10-19 22:22:42,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:42,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:42,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:42,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:42,962 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-10-19 22:22:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:43,034 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-10-19 22:22:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:43,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-19 22:22:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:43,035 INFO L225 Difference]: With dead ends: 160 [2020-10-19 22:22:43,036 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 22:22:43,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 22:22:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-19 22:22:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 22:22:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-10-19 22:22:43,044 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-10-19 22:22:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:43,044 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-10-19 22:22:43,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-10-19 22:22:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 22:22:43,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:43,046 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-19 22:22:43,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-19 22:22:43,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:43,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-10-19 22:22:43,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:43,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620456962] [2020-10-19 22:22:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:43,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620456962] [2020-10-19 22:22:43,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135179215] [2020-10-19 22:22:43,386 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 [2020-10-19 22:22:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:43,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:43,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:43,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:43,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 22:22:43,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786098481] [2020-10-19 22:22:43,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:43,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:43,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:43,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:43,558 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2020-10-19 22:22:43,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:43,652 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2020-10-19 22:22:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:43,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-19 22:22:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:43,654 INFO L225 Difference]: With dead ends: 126 [2020-10-19 22:22:43,654 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 22:22:43,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 22:22:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-10-19 22:22:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-19 22:22:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2020-10-19 22:22:43,661 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 35 [2020-10-19 22:22:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:43,662 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2020-10-19 22:22:43,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2020-10-19 22:22:43,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:22:43,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:43,664 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-19 22:22:43,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:43,879 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:43,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2010695315, now seen corresponding path program 2 times [2020-10-19 22:22:43,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:43,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418868440] [2020-10-19 22:22:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:43,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418868440] [2020-10-19 22:22:43,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711846340] [2020-10-19 22:22:43,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-19 22:22:44,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:44,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:44,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:44,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 22:22:44,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:44,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-10-19 22:22:44,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990108308] [2020-10-19 22:22:44,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:44,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:44,109 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 6 states. [2020-10-19 22:22:44,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:44,315 INFO L93 Difference]: Finished difference Result 172 states and 227 transitions. [2020-10-19 22:22:44,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:44,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-19 22:22:44,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:44,318 INFO L225 Difference]: With dead ends: 172 [2020-10-19 22:22:44,318 INFO L226 Difference]: Without dead ends: 168 [2020-10-19 22:22:44,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:22:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-19 22:22:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 127. [2020-10-19 22:22:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-19 22:22:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-10-19 22:22:44,345 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 36 [2020-10-19 22:22:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:44,346 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-10-19 22:22:44,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-10-19 22:22:44,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 22:22:44,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:44,352 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-19 22:22:44,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:44,566 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash 508659463, now seen corresponding path program 1 times [2020-10-19 22:22:44,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:44,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931648183] [2020-10-19 22:22:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:44,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931648183] [2020-10-19 22:22:44,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924815256] [2020-10-19 22:22:44,657 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 [2020-10-19 22:22:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:44,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:22:44,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:44,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:44,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 22:22:44,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636566688] [2020-10-19 22:22:44,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:44,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:44,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:44,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:44,776 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 6 states. [2020-10-19 22:22:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:44,836 INFO L93 Difference]: Finished difference Result 288 states and 395 transitions. [2020-10-19 22:22:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:44,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-19 22:22:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:44,838 INFO L225 Difference]: With dead ends: 288 [2020-10-19 22:22:44,838 INFO L226 Difference]: Without dead ends: 188 [2020-10-19 22:22:44,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-19 22:22:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 134. [2020-10-19 22:22:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-19 22:22:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 182 transitions. [2020-10-19 22:22:44,848 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 182 transitions. Word has length 38 [2020-10-19 22:22:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:44,848 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 182 transitions. [2020-10-19 22:22:44,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 182 transitions. [2020-10-19 22:22:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-19 22:22:44,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:44,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:45,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:45,059 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:45,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1319305574, now seen corresponding path program 1 times [2020-10-19 22:22:45,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:45,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702866872] [2020-10-19 22:22:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:45,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702866872] [2020-10-19 22:22:45,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066059723] [2020-10-19 22:22:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:45,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:22:45,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:45,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:45,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-19 22:22:45,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820075303] [2020-10-19 22:22:45,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:45,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:45,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:45,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:45,307 INFO L87 Difference]: Start difference. First operand 134 states and 182 transitions. Second operand 7 states. [2020-10-19 22:22:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:45,503 INFO L93 Difference]: Finished difference Result 234 states and 325 transitions. [2020-10-19 22:22:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:45,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-19 22:22:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:45,505 INFO L225 Difference]: With dead ends: 234 [2020-10-19 22:22:45,505 INFO L226 Difference]: Without dead ends: 146 [2020-10-19 22:22:45,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-19 22:22:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2020-10-19 22:22:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-19 22:22:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2020-10-19 22:22:45,513 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 40 [2020-10-19 22:22:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:45,513 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2020-10-19 22:22:45,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2020-10-19 22:22:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 22:22:45,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:45,514 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:45,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 22:22:45,728 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:45,729 INFO L82 PathProgramCache]: Analyzing trace with hash -976708544, now seen corresponding path program 2 times [2020-10-19 22:22:45,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:45,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381698264] [2020-10-19 22:22:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:45,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381698264] [2020-10-19 22:22:45,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165718147] [2020-10-19 22:22:45,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:45,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:45,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:45,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:22:45,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:22:45,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:45,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-10-19 22:22:45,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95988908] [2020-10-19 22:22:45,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:45,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:45,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:45,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:45,871 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand 5 states. [2020-10-19 22:22:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:45,920 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2020-10-19 22:22:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:45,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-19 22:22:45,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:45,922 INFO L225 Difference]: With dead ends: 155 [2020-10-19 22:22:45,923 INFO L226 Difference]: Without dead ends: 150 [2020-10-19 22:22:45,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:45,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-19 22:22:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2020-10-19 22:22:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-19 22:22:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 194 transitions. [2020-10-19 22:22:45,931 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 194 transitions. Word has length 41 [2020-10-19 22:22:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:45,932 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 194 transitions. [2020-10-19 22:22:45,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 194 transitions. [2020-10-19 22:22:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 22:22:45,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:45,933 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:46,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:46,149 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:46,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash -974861502, now seen corresponding path program 1 times [2020-10-19 22:22:46,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:46,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422218257] [2020-10-19 22:22:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:22:46,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422218257] [2020-10-19 22:22:46,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:46,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:22:46,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630278047] [2020-10-19 22:22:46,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:46,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:46,205 INFO L87 Difference]: Start difference. First operand 145 states and 194 transitions. Second operand 5 states. [2020-10-19 22:22:46,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:46,233 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2020-10-19 22:22:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:46,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-19 22:22:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:46,235 INFO L225 Difference]: With dead ends: 150 [2020-10-19 22:22:46,235 INFO L226 Difference]: Without dead ends: 140 [2020-10-19 22:22:46,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:46,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-19 22:22:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-19 22:22:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-19 22:22:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-10-19 22:22:46,243 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 41 [2020-10-19 22:22:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:46,243 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-10-19 22:22:46,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-10-19 22:22:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 22:22:46,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:46,247 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:46,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:22:46,247 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:46,248 INFO L82 PathProgramCache]: Analyzing trace with hash -543462300, now seen corresponding path program 1 times [2020-10-19 22:22:46,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:46,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861589500] [2020-10-19 22:22:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:46,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861589500] [2020-10-19 22:22:46,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167095629] [2020-10-19 22:22:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:46,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:22:46,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:46,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:46,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-19 22:22:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570176054] [2020-10-19 22:22:46,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:46,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:46,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:46,422 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 7 states. [2020-10-19 22:22:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:46,505 INFO L93 Difference]: Finished difference Result 315 states and 414 transitions. [2020-10-19 22:22:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:46,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-19 22:22:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:46,508 INFO L225 Difference]: With dead ends: 315 [2020-10-19 22:22:46,509 INFO L226 Difference]: Without dead ends: 208 [2020-10-19 22:22:46,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-19 22:22:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2020-10-19 22:22:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-19 22:22:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2020-10-19 22:22:46,516 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 42 [2020-10-19 22:22:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:46,516 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2020-10-19 22:22:46,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2020-10-19 22:22:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-19 22:22:46,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:46,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:46,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:46,732 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:46,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1931714523, now seen corresponding path program 1 times [2020-10-19 22:22:46,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:46,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321548293] [2020-10-19 22:22:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:46,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321548293] [2020-10-19 22:22:46,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677472757] [2020-10-19 22:22:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:46,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 22:22:46,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:46,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:46,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-19 22:22:46,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992781948] [2020-10-19 22:22:46,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:46,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:46,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:46,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:46,961 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand 8 states. [2020-10-19 22:22:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:47,168 INFO L93 Difference]: Finished difference Result 251 states and 337 transitions. [2020-10-19 22:22:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:22:47,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-19 22:22:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:47,169 INFO L225 Difference]: With dead ends: 251 [2020-10-19 22:22:47,170 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 22:22:47,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 22:22:47,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-10-19 22:22:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-19 22:22:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-10-19 22:22:47,177 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 44 [2020-10-19 22:22:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:47,177 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-10-19 22:22:47,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-10-19 22:22:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:22:47,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:47,178 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:47,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-19 22:22:47,393 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:47,393 INFO L82 PathProgramCache]: Analyzing trace with hash 514014493, now seen corresponding path program 2 times [2020-10-19 22:22:47,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:47,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013546432] [2020-10-19 22:22:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:47,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013546432] [2020-10-19 22:22:47,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450078326] [2020-10-19 22:22:47,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:47,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:47,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:47,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:22:47,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-19 22:22:47,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:47,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-10-19 22:22:47,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911305147] [2020-10-19 22:22:47,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:47,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:47,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:47,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:47,553 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 6 states. [2020-10-19 22:22:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:47,670 INFO L93 Difference]: Finished difference Result 182 states and 232 transitions. [2020-10-19 22:22:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:47,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-19 22:22:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:47,671 INFO L225 Difference]: With dead ends: 182 [2020-10-19 22:22:47,672 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 22:22:47,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:22:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 22:22:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-10-19 22:22:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-19 22:22:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 191 transitions. [2020-10-19 22:22:47,679 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 191 transitions. Word has length 45 [2020-10-19 22:22:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:47,679 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 191 transitions. [2020-10-19 22:22:47,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 191 transitions. [2020-10-19 22:22:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 22:22:47,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:47,680 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:47,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-19 22:22:47,881 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:47,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:47,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1892120530, now seen corresponding path program 1 times [2020-10-19 22:22:47,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:47,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531113891] [2020-10-19 22:22:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:47,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531113891] [2020-10-19 22:22:47,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930587368] [2020-10-19 22:22:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:48,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:22:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:48,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:48,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-19 22:22:48,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363099409] [2020-10-19 22:22:48,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:48,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:48,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:48,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:48,067 INFO L87 Difference]: Start difference. First operand 149 states and 191 transitions. Second operand 8 states. [2020-10-19 22:22:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:48,148 INFO L93 Difference]: Finished difference Result 330 states and 422 transitions. [2020-10-19 22:22:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:22:48,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-19 22:22:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:48,150 INFO L225 Difference]: With dead ends: 330 [2020-10-19 22:22:48,150 INFO L226 Difference]: Without dead ends: 220 [2020-10-19 22:22:48,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-19 22:22:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 156. [2020-10-19 22:22:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 22:22:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2020-10-19 22:22:48,160 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 49 [2020-10-19 22:22:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:48,160 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2020-10-19 22:22:48,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2020-10-19 22:22:48,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:22:48,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:48,161 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:48,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-19 22:22:48,375 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:48,375 INFO L82 PathProgramCache]: Analyzing trace with hash -260802349, now seen corresponding path program 1 times [2020-10-19 22:22:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:48,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113327946] [2020-10-19 22:22:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:48,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113327946] [2020-10-19 22:22:48,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231036904] [2020-10-19 22:22:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:48,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 22:22:48,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:48,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:48,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-19 22:22:48,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946535665] [2020-10-19 22:22:48,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:22:48,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:48,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:22:48,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:48,625 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand 9 states. [2020-10-19 22:22:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:48,818 INFO L93 Difference]: Finished difference Result 260 states and 339 transitions. [2020-10-19 22:22:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:48,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-19 22:22:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:48,821 INFO L225 Difference]: With dead ends: 260 [2020-10-19 22:22:48,821 INFO L226 Difference]: Without dead ends: 168 [2020-10-19 22:22:48,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:48,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-19 22:22:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2020-10-19 22:22:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-19 22:22:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2020-10-19 22:22:48,829 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 51 [2020-10-19 22:22:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:48,829 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2020-10-19 22:22:48,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:22:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2020-10-19 22:22:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 22:22:48,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:48,831 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:49,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-19 22:22:49,045 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:49,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:49,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1844505351, now seen corresponding path program 2 times [2020-10-19 22:22:49,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:49,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145350841] [2020-10-19 22:22:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:49,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145350841] [2020-10-19 22:22:49,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053065764] [2020-10-19 22:22:49,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:49,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:49,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:49,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 22:22:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-19 22:22:49,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:49,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2020-10-19 22:22:49,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781537480] [2020-10-19 22:22:49,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:49,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:49,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:49,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:22:49,254 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand 7 states. [2020-10-19 22:22:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:49,382 INFO L93 Difference]: Finished difference Result 256 states and 317 transitions. [2020-10-19 22:22:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:49,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-19 22:22:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:49,384 INFO L225 Difference]: With dead ends: 256 [2020-10-19 22:22:49,384 INFO L226 Difference]: Without dead ends: 206 [2020-10-19 22:22:49,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-19 22:22:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-19 22:22:49,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 177. [2020-10-19 22:22:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-19 22:22:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 223 transitions. [2020-10-19 22:22:49,401 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 223 transitions. Word has length 52 [2020-10-19 22:22:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:49,402 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 223 transitions. [2020-10-19 22:22:49,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 223 transitions. [2020-10-19 22:22:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-19 22:22:49,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:49,403 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:49,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-19 22:22:49,616 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:49,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:49,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1144040006, now seen corresponding path program 1 times [2020-10-19 22:22:49,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:49,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462495020] [2020-10-19 22:22:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:49,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462495020] [2020-10-19 22:22:49,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330160345] [2020-10-19 22:22:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:49,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:49,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:49,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:49,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-19 22:22:49,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348239667] [2020-10-19 22:22:49,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:22:49,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:49,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:22:49,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:49,852 INFO L87 Difference]: Start difference. First operand 177 states and 223 transitions. Second operand 9 states. [2020-10-19 22:22:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:49,974 INFO L93 Difference]: Finished difference Result 391 states and 491 transitions. [2020-10-19 22:22:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:49,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-19 22:22:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:49,976 INFO L225 Difference]: With dead ends: 391 [2020-10-19 22:22:49,976 INFO L226 Difference]: Without dead ends: 259 [2020-10-19 22:22:49,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-19 22:22:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 184. [2020-10-19 22:22:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 22:22:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 231 transitions. [2020-10-19 22:22:49,989 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 231 transitions. Word has length 54 [2020-10-19 22:22:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:49,989 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 231 transitions. [2020-10-19 22:22:49,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:22:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 231 transitions. [2020-10-19 22:22:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-19 22:22:49,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:49,996 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:50,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:50,210 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:50,210 INFO L82 PathProgramCache]: Analyzing trace with hash -988904487, now seen corresponding path program 1 times [2020-10-19 22:22:50,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:50,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756758715] [2020-10-19 22:22:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-19 22:22:50,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756758715] [2020-10-19 22:22:50,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:50,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:50,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258467400] [2020-10-19 22:22:50,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:50,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:50,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:50,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:50,275 INFO L87 Difference]: Start difference. First operand 184 states and 231 transitions. Second operand 3 states. [2020-10-19 22:22:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:50,321 INFO L93 Difference]: Finished difference Result 255 states and 316 transitions. [2020-10-19 22:22:50,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:50,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-10-19 22:22:50,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:50,322 INFO L225 Difference]: With dead ends: 255 [2020-10-19 22:22:50,322 INFO L226 Difference]: Without dead ends: 74 [2020-10-19 22:22:50,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-19 22:22:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-19 22:22:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-19 22:22:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-19 22:22:50,328 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 56 [2020-10-19 22:22:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:50,329 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-19 22:22:50,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-19 22:22:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 22:22:50,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:50,330 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:50,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:22:50,330 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash -408520283, now seen corresponding path program 1 times [2020-10-19 22:22:50,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:50,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93005703] [2020-10-19 22:22:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:50,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93005703] [2020-10-19 22:22:50,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685705734] [2020-10-19 22:22:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:50,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 22:22:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:50,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:50,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-19 22:22:50,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11931248] [2020-10-19 22:22:50,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:22:50,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:50,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:22:50,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:22:50,609 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 10 states. [2020-10-19 22:22:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:50,788 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-10-19 22:22:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:22:50,790 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-19 22:22:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:50,790 INFO L225 Difference]: With dead ends: 126 [2020-10-19 22:22:50,791 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 22:22:50,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:22:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 22:22:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-10-19 22:22:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 22:22:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-10-19 22:22:50,800 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 58 [2020-10-19 22:22:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:50,800 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-10-19 22:22:50,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:22:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-10-19 22:22:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:22:50,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:50,801 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:51,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:51,015 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash -807057443, now seen corresponding path program 1 times [2020-10-19 22:22:51,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:51,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273708510] [2020-10-19 22:22:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:51,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273708510] [2020-10-19 22:22:51,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005087454] [2020-10-19 22:22:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:51,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:51,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:51,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:51,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-19 22:22:51,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801005977] [2020-10-19 22:22:51,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:22:51,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:22:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:22:51,178 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 10 states. [2020-10-19 22:22:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:51,232 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-10-19 22:22:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:22:51,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-19 22:22:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:51,235 INFO L225 Difference]: With dead ends: 149 [2020-10-19 22:22:51,235 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 22:22:51,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:22:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 22:22:51,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2020-10-19 22:22:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-19 22:22:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2020-10-19 22:22:51,242 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 59 [2020-10-19 22:22:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:51,243 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2020-10-19 22:22:51,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:22:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2020-10-19 22:22:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-19 22:22:51,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:51,244 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:51,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-19 22:22:51,457 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:51,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2016429986, now seen corresponding path program 2 times [2020-10-19 22:22:51,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:51,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12374710] [2020-10-19 22:22:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:51,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12374710] [2020-10-19 22:22:51,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924363901] [2020-10-19 22:22:51,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:51,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:51,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:51,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 22:22:51,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-19 22:22:51,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:51,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2020-10-19 22:22:51,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961120788] [2020-10-19 22:22:51,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:51,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:51,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:51,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-19 22:22:51,807 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 7 states. [2020-10-19 22:22:51,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:51,925 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-10-19 22:22:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:51,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-19 22:22:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:51,926 INFO L225 Difference]: With dead ends: 80 [2020-10-19 22:22:51,926 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:22:51,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-10-19 22:22:51,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:22:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:22:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:22:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:22:51,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-10-19 22:22:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:51,928 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:22:51,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:22:51,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:22:52,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:52,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-10-19 22:22:52,597 INFO L274 CegarLoopResult]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-10-19 22:22:52,598 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:52,598 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:52,598 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:52,598 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:52,598 INFO L270 CegarLoopResult]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-10-19 22:22:52,598 INFO L270 CegarLoopResult]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:52,598 INFO L270 CegarLoopResult]: At program point L71-2(lines 20 73) the Hoare annotation is: (or (and (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-19 22:22:52,599 INFO L270 CegarLoopResult]: At program point L71-3(lines 20 73) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2020-10-19 22:22:52,599 INFO L274 CegarLoopResult]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-10-19 22:22:52,599 INFO L274 CegarLoopResult]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-10-19 22:22:52,599 INFO L270 CegarLoopResult]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-10-19 22:22:52,599 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:52,599 INFO L270 CegarLoopResult]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:52,599 INFO L270 CegarLoopResult]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-10-19 22:22:52,599 INFO L270 CegarLoopResult]: At program point L72-2(lines 16 74) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0))) [2020-10-19 22:22:52,600 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:52,600 INFO L270 CegarLoopResult]: At program point L72-3(lines 16 74) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (and (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-19 22:22:52,600 INFO L270 CegarLoopResult]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:52,600 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:52,601 INFO L270 CegarLoopResult]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:52,601 INFO L274 CegarLoopResult]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:52,601 INFO L270 CegarLoopResult]: At program point L39-7(lines 29 44) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-19 22:22:52,601 INFO L274 CegarLoopResult]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-10-19 22:22:52,601 INFO L274 CegarLoopResult]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-10-19 22:22:52,601 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-10-19 22:22:52,601 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:22:52,601 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-19 22:22:52,603 INFO L270 CegarLoopResult]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0) (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) [2020-10-19 22:22:52,603 INFO L274 CegarLoopResult]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:52,603 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:52,603 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:52,603 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:52,603 INFO L270 CegarLoopResult]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0)) [2020-10-19 22:22:52,603 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:22:52,603 INFO L274 CegarLoopResult]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-10-19 22:22:52,604 INFO L274 CegarLoopResult]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-10-19 22:22:52,604 INFO L274 CegarLoopResult]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:52,604 INFO L274 CegarLoopResult]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:52,604 INFO L274 CegarLoopResult]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:52,604 INFO L274 CegarLoopResult]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:52,604 INFO L270 CegarLoopResult]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-10-19 22:22:52,604 INFO L270 CegarLoopResult]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:52,604 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:22:52,604 INFO L270 CegarLoopResult]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:52,605 INFO L270 CegarLoopResult]: At program point L65-3(lines 27 67) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-19 22:22:52,605 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:22:52,605 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-10-19 22:22:52,605 INFO L270 CegarLoopResult]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-10-19 22:22:52,605 INFO L270 CegarLoopResult]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:52,605 INFO L270 CegarLoopResult]: At program point L49-11(lines 49 64) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-19 22:22:52,605 INFO L274 CegarLoopResult]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-10-19 22:22:52,605 INFO L277 CegarLoopResult]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-10-19 22:22:52,606 INFO L274 CegarLoopResult]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,606 INFO L274 CegarLoopResult]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,606 INFO L274 CegarLoopResult]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,606 INFO L274 CegarLoopResult]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L274 CegarLoopResult]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:52,607 INFO L277 CegarLoopResult]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-10-19 22:22:52,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:52 BoogieIcfgContainer [2020-10-19 22:22:52,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:52,640 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:52,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:52,640 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:52,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:41" (3/4) ... [2020-10-19 22:22:52,645 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:22:52,677 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-19 22:22:52,678 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-19 22:22:52,679 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:22:52,679 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:22:52,729 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 [2020-10-19 22:22:52,731 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-10-19 22:22:52,733 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((a == 0 && zero % 4294967296 <= 0) || (\result == 0 && __retres4 == 0)) || zero == 0 [2020-10-19 22:22:52,735 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 [2020-10-19 22:22:52,825 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:22:52,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:52,829 INFO L168 Benchmark]: Toolchain (without parser) took 12773.44 ms. Allocated memory was 34.6 MB in the beginning and 82.8 MB in the end (delta: 48.2 MB). Free memory was 6.4 MB in the beginning and 11.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 43.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,829 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 34.1 MB. Free memory was 11.2 MB in the beginning and 11.1 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.14 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.9 MB in the beginning and 24.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.26 ms. Allocated memory is still 45.1 MB. Free memory was 24.6 MB in the beginning and 22.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,831 INFO L168 Benchmark]: Boogie Preprocessor took 37.48 ms. Allocated memory is still 45.1 MB. Free memory was 22.2 MB in the beginning and 20.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,832 INFO L168 Benchmark]: RCFGBuilder took 694.52 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 20.2 MB in the beginning and 21.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,833 INFO L168 Benchmark]: TraceAbstraction took 11228.67 ms. Allocated memory was 46.7 MB in the beginning and 82.8 MB in the end (delta: 36.2 MB). Free memory was 20.7 MB in the beginning and 19.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 49.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,833 INFO L168 Benchmark]: Witness Printer took 186.21 ms. Allocated memory is still 82.8 MB. Free memory was 19.3 MB in the beginning and 11.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:52,837 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 34.1 MB. Free memory was 11.2 MB in the beginning and 11.1 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 532.14 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.9 MB in the beginning and 24.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 69.26 ms. Allocated memory is still 45.1 MB. Free memory was 24.6 MB in the beginning and 22.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.48 ms. Allocated memory is still 45.1 MB. Free memory was 22.2 MB in the beginning and 20.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 694.52 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 20.2 MB in the beginning and 21.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 11228.67 ms. Allocated memory was 46.7 MB in the beginning and 82.8 MB in the end (delta: 36.2 MB). Free memory was 20.7 MB in the beginning and 19.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 49.6 MB. Max. memory is 14.3 GB. * Witness Printer took 186.21 ms. Allocated memory is still 82.8 MB. Free memory was 19.3 MB in the beginning and 11.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (zero % 4294967296 <= 0 && __retres4 == 0) || zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || (\result == 0 && __retres4 == 0)) || zero == 0 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sb == 1 && tmp == 1) || sb + 1 <= 0) || (__retres10 == 0 && zero % 4294967296 <= 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (e == 0 && __retres4 == 0) && m == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || zero == 0) || __retres4 == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2053 SDtfs, 1005 SDslu, 4873 SDs, 0 SdLazy, 1760 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 885 GetRequests, 726 SyntacticMatches, 16 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 447 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 68 NumberOfFragments, 201 HoareAnnotationTreeSize, 24 FomulaSimplifications, 17454 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 24 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1714 NumberOfCodeBlocks, 1654 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1675 ConstructedInterpolants, 0 QuantifiedInterpolants, 169320 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2685 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 39 InterpolantComputations, 12 PerfectInterpolantSequences, 211/866 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...