./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_1.5.800.v20200727-1323.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/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.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 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:10:11,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:10:11,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:10:11,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:10:11,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:10:11,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:10:11,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:10:11,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:10:11,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:10:11,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:10:11,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:10:11,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:10:11,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:10:11,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:10:11,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:10:11,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:10:11,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:10:11,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:10:11,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:10:11,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:10:11,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:10:11,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:10:11,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:10:11,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:10:11,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:10:11,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:10:11,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:10:11,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:10:11,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:10:11,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:10:11,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:10:11,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:10:11,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:10:11,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:10:11,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:10:11,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:10:11,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:10:11,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:10:11,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:10:11,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:10:11,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:10:11,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:10:11,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:10:11,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:10:11,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:10:11,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:10:11,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:10:11,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:10:11,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:10:11,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:10:11,622 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:10:11,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:10:11,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:10:11,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:10:11,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:10:11,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:10:11,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:10:11,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:10:11,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:10:11,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:10:11,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:10:11,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:10:11,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:10:11,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:10:11,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:10:11,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:10:11,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:10:11,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:10:11,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:10:11,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:10:11,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:10:11,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:10:11,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:10:11,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:10:11,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:10:11,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:10:11,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2021-12-16 01:10:11,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:10:11,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:10:11,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:10:11,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:10:11,877 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:10:11,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2021-12-16 01:10:11,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6839548e8/f27d1d0812e14c84b04ed52e39293364/FLAG50a589ad9 [2021-12-16 01:10:12,330 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:10:12,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2021-12-16 01:10:12,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6839548e8/f27d1d0812e14c84b04ed52e39293364/FLAG50a589ad9 [2021-12-16 01:10:12,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6839548e8/f27d1d0812e14c84b04ed52e39293364 [2021-12-16 01:10:12,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:10:12,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:10:12,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:10:12,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:10:12,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:10:12,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:12" (1/1) ... [2021-12-16 01:10:12,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14335434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:12, skipping insertion in model container [2021-12-16 01:10:12,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:12" (1/1) ... [2021-12-16 01:10:12,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:10:12,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:10:12,947 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2021-12-16 01:10:12,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:10:12,958 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:10:13,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2021-12-16 01:10:13,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:10:13,022 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:10:13,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13 WrapperNode [2021-12-16 01:10:13,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:10:13,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:10:13,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:10:13,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:10:13,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,086 INFO L137 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 415 [2021-12-16 01:10:13,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:10:13,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:10:13,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:10:13,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:10:13,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:10:13,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:10:13,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:10:13,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:10:13,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (1/1) ... [2021-12-16 01:10:13,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:10:13,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:13,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 01:10:13,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 01:10:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:10:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2021-12-16 01:10:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2021-12-16 01:10:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-16 01:10:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-16 01:10:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2021-12-16 01:10:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2021-12-16 01:10:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2021-12-16 01:10:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2021-12-16 01:10:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2021-12-16 01:10:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2021-12-16 01:10:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:10:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:10:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:10:13,362 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:10:13,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:10:13,815 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:10:13,826 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:10:13,826 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 01:10:13,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:13 BoogieIcfgContainer [2021-12-16 01:10:13,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:10:13,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:10:13,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:10:13,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:10:13,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:10:12" (1/3) ... [2021-12-16 01:10:13,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515c4d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:13, skipping insertion in model container [2021-12-16 01:10:13,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:13" (2/3) ... [2021-12-16 01:10:13,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515c4d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:13, skipping insertion in model container [2021-12-16 01:10:13,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:13" (3/3) ... [2021-12-16 01:10:13,836 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2021-12-16 01:10:13,843 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:10:13,843 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:10:13,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:10:13,895 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 01:10:13,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:10:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 150 states have internal predecessors, (235), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-16 01:10:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 01:10:13,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:13,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:13,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash 373059156, now seen corresponding path program 1 times [2021-12-16 01:10:13,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:13,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767297726] [2021-12-16 01:10:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:13,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:14,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767297726] [2021-12-16 01:10:14,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767297726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:14,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:14,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:14,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967065740] [2021-12-16 01:10:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:14,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:14,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:14,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:14,193 INFO L87 Difference]: Start difference. First operand has 185 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 150 states have internal predecessors, (235), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:14,312 INFO L93 Difference]: Finished difference Result 375 states and 641 transitions. [2021-12-16 01:10:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:14,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 01:10:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:14,330 INFO L225 Difference]: With dead ends: 375 [2021-12-16 01:10:14,331 INFO L226 Difference]: Without dead ends: 189 [2021-12-16 01:10:14,338 INFO L932 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 [2021-12-16 01:10:14,342 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 18 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:14,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 832 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-16 01:10:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2021-12-16 01:10:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 148 states have (on average 1.5337837837837838) internal successors, (227), 151 states have internal predecessors, (227), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-16 01:10:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 291 transitions. [2021-12-16 01:10:14,391 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 291 transitions. Word has length 15 [2021-12-16 01:10:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:14,391 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 291 transitions. [2021-12-16 01:10:14,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 291 transitions. [2021-12-16 01:10:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 01:10:14,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:14,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:14,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:10:14,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1034031296, now seen corresponding path program 1 times [2021-12-16 01:10:14,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:14,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50241139] [2021-12-16 01:10:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:14,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50241139] [2021-12-16 01:10:14,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50241139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:14,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:14,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:14,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418523102] [2021-12-16 01:10:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:14,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:14,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:14,446 INFO L87 Difference]: Start difference. First operand 187 states and 291 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:14,512 INFO L93 Difference]: Finished difference Result 387 states and 605 transitions. [2021-12-16 01:10:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:14,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 01:10:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:14,516 INFO L225 Difference]: With dead ends: 387 [2021-12-16 01:10:14,516 INFO L226 Difference]: Without dead ends: 203 [2021-12-16 01:10:14,521 INFO L932 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 [2021-12-16 01:10:14,523 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 25 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:14,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-16 01:10:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2021-12-16 01:10:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.5157232704402517) internal successors, (241), 162 states have internal predecessors, (241), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:14,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 307 transitions. [2021-12-16 01:10:14,551 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 307 transitions. Word has length 16 [2021-12-16 01:10:14,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:14,551 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 307 transitions. [2021-12-16 01:10:14,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:14,552 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 307 transitions. [2021-12-16 01:10:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 01:10:14,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:14,553 INFO L514 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] [2021-12-16 01:10:14,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:10:14,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1490256581, now seen corresponding path program 1 times [2021-12-16 01:10:14,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:14,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561299020] [2021-12-16 01:10:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:14,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561299020] [2021-12-16 01:10:14,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561299020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:14,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:14,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:10:14,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077985197] [2021-12-16 01:10:14,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:14,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:10:14,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:10:14,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:10:14,599 INFO L87 Difference]: Start difference. First operand 200 states and 307 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 01:10:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:14,614 INFO L93 Difference]: Finished difference Result 419 states and 651 transitions. [2021-12-16 01:10:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:10:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-16 01:10:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:14,621 INFO L225 Difference]: With dead ends: 419 [2021-12-16 01:10:14,621 INFO L226 Difference]: Without dead ends: 229 [2021-12-16 01:10:14,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:10:14,627 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 22 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:14,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 568 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:14,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-16 01:10:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 202. [2021-12-16 01:10:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.5093167701863355) internal successors, (243), 164 states have internal predecessors, (243), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 309 transitions. [2021-12-16 01:10:14,648 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 309 transitions. Word has length 23 [2021-12-16 01:10:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:14,649 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 309 transitions. [2021-12-16 01:10:14,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 01:10:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 309 transitions. [2021-12-16 01:10:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 01:10:14,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:14,651 INFO L514 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] [2021-12-16 01:10:14,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:10:14,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1716180554, now seen corresponding path program 1 times [2021-12-16 01:10:14,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:14,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292526603] [2021-12-16 01:10:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:14,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292526603] [2021-12-16 01:10:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292526603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:14,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:14,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:14,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947411059] [2021-12-16 01:10:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:14,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:14,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:14,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:14,709 INFO L87 Difference]: Start difference. First operand 202 states and 309 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:14,750 INFO L93 Difference]: Finished difference Result 460 states and 720 transitions. [2021-12-16 01:10:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2021-12-16 01:10:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:14,753 INFO L225 Difference]: With dead ends: 460 [2021-12-16 01:10:14,753 INFO L226 Difference]: Without dead ends: 309 [2021-12-16 01:10:14,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:14,754 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 134 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:14,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 876 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-16 01:10:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 202. [2021-12-16 01:10:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.484472049689441) internal successors, (239), 164 states have internal predecessors, (239), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-12-16 01:10:14,767 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 31 [2021-12-16 01:10:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:14,767 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-12-16 01:10:14,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-12-16 01:10:14,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 01:10:14,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:14,769 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:14,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:10:14,769 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash -590315317, now seen corresponding path program 1 times [2021-12-16 01:10:14,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:14,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070346819] [2021-12-16 01:10:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:14,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070346819] [2021-12-16 01:10:14,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070346819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:14,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:14,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:14,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73718644] [2021-12-16 01:10:14,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:14,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:14,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:14,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:14,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:14,835 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:14,861 INFO L93 Difference]: Finished difference Result 394 states and 599 transitions. [2021-12-16 01:10:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-16 01:10:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:14,863 INFO L225 Difference]: With dead ends: 394 [2021-12-16 01:10:14,863 INFO L226 Difference]: Without dead ends: 204 [2021-12-16 01:10:14,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:14,864 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:14,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1112 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-16 01:10:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2021-12-16 01:10:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.4782608695652173) internal successors, (238), 164 states have internal predecessors, (238), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-12-16 01:10:14,875 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 32 [2021-12-16 01:10:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:14,875 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-12-16 01:10:14,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-12-16 01:10:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 01:10:14,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:14,876 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:14,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:10:14,877 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:14,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1085391716, now seen corresponding path program 1 times [2021-12-16 01:10:14,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:14,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913386164] [2021-12-16 01:10:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:14,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913386164] [2021-12-16 01:10:14,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913386164] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674763041] [2021-12-16 01:10:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:14,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:14,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:14,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 01:10:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:15,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:15,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:15,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674763041] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:15,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:15,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-16 01:10:15,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923253356] [2021-12-16 01:10:15,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:15,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:15,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:15,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:15,275 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 01:10:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:15,330 INFO L93 Difference]: Finished difference Result 452 states and 695 transitions. [2021-12-16 01:10:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:15,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2021-12-16 01:10:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:15,334 INFO L225 Difference]: With dead ends: 452 [2021-12-16 01:10:15,334 INFO L226 Difference]: Without dead ends: 261 [2021-12-16 01:10:15,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:15,338 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 66 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:15,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1095 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-16 01:10:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2021-12-16 01:10:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 204 states have (on average 1.4558823529411764) internal successors, (297), 207 states have internal predecessors, (297), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-16 01:10:15,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 383 transitions. [2021-12-16 01:10:15,356 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 383 transitions. Word has length 35 [2021-12-16 01:10:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:15,356 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 383 transitions. [2021-12-16 01:10:15,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 01:10:15,356 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 383 transitions. [2021-12-16 01:10:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 01:10:15,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:15,358 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:15,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 01:10:15,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 01:10:15,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:15,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1975524508, now seen corresponding path program 2 times [2021-12-16 01:10:15,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:15,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035395118] [2021-12-16 01:10:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:15,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-16 01:10:15,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:15,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035395118] [2021-12-16 01:10:15,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035395118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:15,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:15,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:15,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020081695] [2021-12-16 01:10:15,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:15,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:15,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:15,691 INFO L87 Difference]: Start difference. First operand 255 states and 383 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:15,736 INFO L93 Difference]: Finished difference Result 490 states and 756 transitions. [2021-12-16 01:10:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-16 01:10:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:15,741 INFO L225 Difference]: With dead ends: 490 [2021-12-16 01:10:15,741 INFO L226 Difference]: Without dead ends: 264 [2021-12-16 01:10:15,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:15,744 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 19 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:15,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 819 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-16 01:10:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2021-12-16 01:10:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 210 states have (on average 1.4523809523809523) internal successors, (305), 213 states have internal predecessors, (305), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-16 01:10:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 391 transitions. [2021-12-16 01:10:15,770 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 391 transitions. Word has length 57 [2021-12-16 01:10:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:15,771 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 391 transitions. [2021-12-16 01:10:15,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 391 transitions. [2021-12-16 01:10:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 01:10:15,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:15,779 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:15,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:10:15,780 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash -64672629, now seen corresponding path program 1 times [2021-12-16 01:10:15,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:15,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356925096] [2021-12-16 01:10:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:15,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 01:10:15,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356925096] [2021-12-16 01:10:15,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356925096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:15,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:15,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:15,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363555770] [2021-12-16 01:10:15,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:15,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:15,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:15,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:15,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:15,835 INFO L87 Difference]: Start difference. First operand 262 states and 391 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:15,867 INFO L93 Difference]: Finished difference Result 534 states and 808 transitions. [2021-12-16 01:10:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:15,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-16 01:10:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:15,869 INFO L225 Difference]: With dead ends: 534 [2021-12-16 01:10:15,869 INFO L226 Difference]: Without dead ends: 301 [2021-12-16 01:10:15,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:15,871 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 24 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:15,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 833 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-16 01:10:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2021-12-16 01:10:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 242 states have (on average 1.4132231404958677) internal successors, (342), 245 states have internal predecessors, (342), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-16 01:10:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 434 transitions. [2021-12-16 01:10:15,882 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 434 transitions. Word has length 57 [2021-12-16 01:10:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:15,883 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 434 transitions. [2021-12-16 01:10:15,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 434 transitions. [2021-12-16 01:10:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-16 01:10:15,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:15,884 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:15,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:10:15,884 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 519762270, now seen corresponding path program 1 times [2021-12-16 01:10:15,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:15,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646597355] [2021-12-16 01:10:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:15,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-16 01:10:15,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:15,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646597355] [2021-12-16 01:10:15,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646597355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:15,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:15,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:15,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200443685] [2021-12-16 01:10:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:15,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:15,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:15,949 INFO L87 Difference]: Start difference. First operand 298 states and 434 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:15,967 INFO L93 Difference]: Finished difference Result 545 states and 807 transitions. [2021-12-16 01:10:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:15,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2021-12-16 01:10:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:15,970 INFO L225 Difference]: With dead ends: 545 [2021-12-16 01:10:15,970 INFO L226 Difference]: Without dead ends: 300 [2021-12-16 01:10:15,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:15,971 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:15,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1111 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-16 01:10:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2021-12-16 01:10:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 242 states have (on average 1.4008264462809918) internal successors, (339), 245 states have internal predecessors, (339), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-16 01:10:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 431 transitions. [2021-12-16 01:10:15,983 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 431 transitions. Word has length 75 [2021-12-16 01:10:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:15,983 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 431 transitions. [2021-12-16 01:10:15,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 431 transitions. [2021-12-16 01:10:15,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-16 01:10:15,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:15,984 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:15,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:10:15,985 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:15,985 INFO L85 PathProgramCache]: Analyzing trace with hash 532920743, now seen corresponding path program 1 times [2021-12-16 01:10:15,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:15,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120643439] [2021-12-16 01:10:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:15,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-16 01:10:16,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120643439] [2021-12-16 01:10:16,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120643439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:16,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:16,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:16,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833337665] [2021-12-16 01:10:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:16,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:16,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:16,068 INFO L87 Difference]: Start difference. First operand 298 states and 431 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,112 INFO L93 Difference]: Finished difference Result 582 states and 863 transitions. [2021-12-16 01:10:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:16,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2021-12-16 01:10:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,115 INFO L225 Difference]: With dead ends: 582 [2021-12-16 01:10:16,115 INFO L226 Difference]: Without dead ends: 342 [2021-12-16 01:10:16,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,117 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 25 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 833 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-16 01:10:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2021-12-16 01:10:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 279 states have (on average 1.3655913978494623) internal successors, (381), 282 states have internal predecessors, (381), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 01:10:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 479 transitions. [2021-12-16 01:10:16,132 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 479 transitions. Word has length 104 [2021-12-16 01:10:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:16,134 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 479 transitions. [2021-12-16 01:10:16,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 479 transitions. [2021-12-16 01:10:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:10:16,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:16,140 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:16,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:10:16,140 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1654716533, now seen corresponding path program 1 times [2021-12-16 01:10:16,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:16,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567420668] [2021-12-16 01:10:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-16 01:10:16,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567420668] [2021-12-16 01:10:16,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567420668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:16,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:16,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:16,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236476680] [2021-12-16 01:10:16,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:16,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:16,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:16,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:16,206 INFO L87 Difference]: Start difference. First operand 339 states and 479 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,239 INFO L93 Difference]: Finished difference Result 608 states and 883 transitions. [2021-12-16 01:10:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2021-12-16 01:10:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,242 INFO L225 Difference]: With dead ends: 608 [2021-12-16 01:10:16,242 INFO L226 Difference]: Without dead ends: 333 [2021-12-16 01:10:16,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,244 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 15 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 792 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-16 01:10:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-16 01:10:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 274 states have (on average 1.3467153284671534) internal successors, (369), 277 states have internal predecessors, (369), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-16 01:10:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 465 transitions. [2021-12-16 01:10:16,255 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 465 transitions. Word has length 105 [2021-12-16 01:10:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:16,255 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 465 transitions. [2021-12-16 01:10:16,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 465 transitions. [2021-12-16 01:10:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 01:10:16,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:16,257 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:16,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:10:16,257 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1120089015, now seen corresponding path program 1 times [2021-12-16 01:10:16,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:16,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888274167] [2021-12-16 01:10:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-16 01:10:16,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888274167] [2021-12-16 01:10:16,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888274167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:16,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:16,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:16,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528497806] [2021-12-16 01:10:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:16,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:16,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,331 INFO L87 Difference]: Start difference. First operand 333 states and 465 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:16,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,348 INFO L93 Difference]: Finished difference Result 583 states and 832 transitions. [2021-12-16 01:10:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:16,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2021-12-16 01:10:16,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,351 INFO L225 Difference]: With dead ends: 583 [2021-12-16 01:10:16,351 INFO L226 Difference]: Without dead ends: 335 [2021-12-16 01:10:16,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,352 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1095 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-16 01:10:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2021-12-16 01:10:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 274 states have (on average 1.3357664233576643) internal successors, (366), 277 states have internal predecessors, (366), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-16 01:10:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 462 transitions. [2021-12-16 01:10:16,363 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 462 transitions. Word has length 124 [2021-12-16 01:10:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:16,364 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 462 transitions. [2021-12-16 01:10:16,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 462 transitions. [2021-12-16 01:10:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-16 01:10:16,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:16,366 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:16,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:10:16,366 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:16,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash -939930564, now seen corresponding path program 1 times [2021-12-16 01:10:16,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:16,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845141416] [2021-12-16 01:10:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-16 01:10:16,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845141416] [2021-12-16 01:10:16,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845141416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:16,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:16,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:16,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456126167] [2021-12-16 01:10:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:16,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:16,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:16,450 INFO L87 Difference]: Start difference. First operand 333 states and 462 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,489 INFO L93 Difference]: Finished difference Result 546 states and 792 transitions. [2021-12-16 01:10:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:16,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2021-12-16 01:10:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,492 INFO L225 Difference]: With dead ends: 546 [2021-12-16 01:10:16,492 INFO L226 Difference]: Without dead ends: 331 [2021-12-16 01:10:16,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,493 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 760 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-16 01:10:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-16 01:10:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 273 states have (on average 1.3333333333333333) internal successors, (364), 276 states have internal predecessors, (364), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-16 01:10:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2021-12-16 01:10:16,503 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 157 [2021-12-16 01:10:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:16,504 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2021-12-16 01:10:16,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2021-12-16 01:10:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-16 01:10:16,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:16,506 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:16,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:10:16,506 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:16,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1043007713, now seen corresponding path program 1 times [2021-12-16 01:10:16,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:16,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285729764] [2021-12-16 01:10:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-16 01:10:16,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285729764] [2021-12-16 01:10:16,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285729764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:16,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:16,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:16,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91981135] [2021-12-16 01:10:16,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:16,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:16,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:16,591 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,631 INFO L93 Difference]: Finished difference Result 486 states and 688 transitions. [2021-12-16 01:10:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:16,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 172 [2021-12-16 01:10:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,634 INFO L225 Difference]: With dead ends: 486 [2021-12-16 01:10:16,634 INFO L226 Difference]: Without dead ends: 314 [2021-12-16 01:10:16,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,635 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 35 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 741 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-16 01:10:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-12-16 01:10:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 259 states have (on average 1.3243243243243243) internal successors, (343), 262 states have internal predecessors, (343), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-16 01:10:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 431 transitions. [2021-12-16 01:10:16,645 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 431 transitions. Word has length 172 [2021-12-16 01:10:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:16,646 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 431 transitions. [2021-12-16 01:10:16,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 431 transitions. [2021-12-16 01:10:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-16 01:10:16,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:16,648 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:16,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:10:16,648 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1497862393, now seen corresponding path program 1 times [2021-12-16 01:10:16,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:16,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733112352] [2021-12-16 01:10:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-12-16 01:10:16,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733112352] [2021-12-16 01:10:16,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733112352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:16,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:16,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:16,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199633255] [2021-12-16 01:10:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:16,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:16,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:16,734 INFO L87 Difference]: Start difference. First operand 314 states and 431 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,772 INFO L93 Difference]: Finished difference Result 469 states and 661 transitions. [2021-12-16 01:10:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:16,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 174 [2021-12-16 01:10:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,774 INFO L225 Difference]: With dead ends: 469 [2021-12-16 01:10:16,775 INFO L226 Difference]: Without dead ends: 295 [2021-12-16 01:10:16,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,776 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 30 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 745 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-16 01:10:16,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-12-16 01:10:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 243 states have (on average 1.316872427983539) internal successors, (320), 246 states have internal predecessors, (320), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-16 01:10:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 402 transitions. [2021-12-16 01:10:16,785 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 402 transitions. Word has length 174 [2021-12-16 01:10:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:16,785 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 402 transitions. [2021-12-16 01:10:16,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 402 transitions. [2021-12-16 01:10:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-16 01:10:16,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:16,787 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:16,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:10:16,788 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1367013378, now seen corresponding path program 1 times [2021-12-16 01:10:16,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:16,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794985593] [2021-12-16 01:10:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-16 01:10:16,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794985593] [2021-12-16 01:10:16,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794985593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:16,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:16,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:16,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381649913] [2021-12-16 01:10:16,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:16,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:16,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,873 INFO L87 Difference]: Start difference. First operand 295 states and 402 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,889 INFO L93 Difference]: Finished difference Result 449 states and 631 transitions. [2021-12-16 01:10:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 175 [2021-12-16 01:10:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,891 INFO L225 Difference]: With dead ends: 449 [2021-12-16 01:10:16,891 INFO L226 Difference]: Without dead ends: 295 [2021-12-16 01:10:16,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:16,892 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1073 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-16 01:10:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-12-16 01:10:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 243 states have (on average 1.2921810699588476) internal successors, (314), 246 states have internal predecessors, (314), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-16 01:10:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 396 transitions. [2021-12-16 01:10:16,902 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 396 transitions. Word has length 175 [2021-12-16 01:10:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:16,902 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 396 transitions. [2021-12-16 01:10:16,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:16,902 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 396 transitions. [2021-12-16 01:10:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-16 01:10:16,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:16,904 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:16,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:10:16,905 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:16,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash -987087320, now seen corresponding path program 1 times [2021-12-16 01:10:16,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:16,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890509270] [2021-12-16 01:10:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:16,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:16,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890509270] [2021-12-16 01:10:16,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890509270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:16,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585625358] [2021-12-16 01:10:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:16,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:16,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:16,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:17,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 01:10:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:17,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:17,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:17,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585625358] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:17,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 01:10:17,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2021-12-16 01:10:17,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544693534] [2021-12-16 01:10:17,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:17,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:17,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:17,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:17,722 INFO L87 Difference]: Start difference. First operand 295 states and 396 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 01:10:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:17,764 INFO L93 Difference]: Finished difference Result 470 states and 653 transitions. [2021-12-16 01:10:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:17,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 182 [2021-12-16 01:10:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:17,766 INFO L225 Difference]: With dead ends: 470 [2021-12-16 01:10:17,767 INFO L226 Difference]: Without dead ends: 274 [2021-12-16 01:10:17,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:17,768 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 35 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:17,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 509 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-12-16 01:10:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-12-16 01:10:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 225 states have (on average 1.2844444444444445) internal successors, (289), 228 states have internal predecessors, (289), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2021-12-16 01:10:17,777 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 182 [2021-12-16 01:10:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:17,778 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2021-12-16 01:10:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 01:10:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2021-12-16 01:10:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-16 01:10:17,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:17,780 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:17,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:18,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-16 01:10:18,005 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:18,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash -140991269, now seen corresponding path program 1 times [2021-12-16 01:10:18,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:18,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909886534] [2021-12-16 01:10:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:18,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:18,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909886534] [2021-12-16 01:10:18,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909886534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:18,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:18,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:18,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799133260] [2021-12-16 01:10:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:18,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:18,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:18,123 INFO L87 Difference]: Start difference. First operand 274 states and 365 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:18,149 INFO L93 Difference]: Finished difference Result 427 states and 595 transitions. [2021-12-16 01:10:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:18,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 206 [2021-12-16 01:10:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:18,151 INFO L225 Difference]: With dead ends: 427 [2021-12-16 01:10:18,151 INFO L226 Difference]: Without dead ends: 280 [2021-12-16 01:10:18,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:18,152 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 6 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:18,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 785 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-16 01:10:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2021-12-16 01:10:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 228 states have (on average 1.280701754385965) internal successors, (292), 231 states have internal predecessors, (292), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 368 transitions. [2021-12-16 01:10:18,162 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 368 transitions. Word has length 206 [2021-12-16 01:10:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:18,164 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 368 transitions. [2021-12-16 01:10:18,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 368 transitions. [2021-12-16 01:10:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-16 01:10:18,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:18,167 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:18,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 01:10:18,167 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1871832371, now seen corresponding path program 1 times [2021-12-16 01:10:18,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:18,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462396004] [2021-12-16 01:10:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:18,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462396004] [2021-12-16 01:10:18,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462396004] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:18,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695832710] [2021-12-16 01:10:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:18,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:18,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:18,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 01:10:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:18,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:18,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:18,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695832710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:18,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:18,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:18,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245980753] [2021-12-16 01:10:18,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:18,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:18,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:18,714 INFO L87 Difference]: Start difference. First operand 278 states and 368 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 01:10:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:18,736 INFO L93 Difference]: Finished difference Result 436 states and 602 transitions. [2021-12-16 01:10:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:18,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 215 [2021-12-16 01:10:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:18,738 INFO L225 Difference]: With dead ends: 436 [2021-12-16 01:10:18,738 INFO L226 Difference]: Without dead ends: 285 [2021-12-16 01:10:18,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:18,739 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 7 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:18,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 790 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-16 01:10:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2021-12-16 01:10:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 232 states have (on average 1.2758620689655173) internal successors, (296), 235 states have internal predecessors, (296), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 372 transitions. [2021-12-16 01:10:18,750 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 372 transitions. Word has length 215 [2021-12-16 01:10:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:18,751 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 372 transitions. [2021-12-16 01:10:18,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 01:10:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 372 transitions. [2021-12-16 01:10:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-16 01:10:18,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:18,755 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:18,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:18,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:18,971 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1464887465, now seen corresponding path program 1 times [2021-12-16 01:10:18,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:18,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814786445] [2021-12-16 01:10:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-16 01:10:19,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:19,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814786445] [2021-12-16 01:10:19,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814786445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:19,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904150281] [2021-12-16 01:10:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:19,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:19,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:19,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:19,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 01:10:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:19,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-16 01:10:19,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:19,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904150281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:19,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:19,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:19,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542496082] [2021-12-16 01:10:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:19,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:19,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:19,541 INFO L87 Difference]: Start difference. First operand 283 states and 372 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 01:10:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:19,563 INFO L93 Difference]: Finished difference Result 438 states and 600 transitions. [2021-12-16 01:10:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 225 [2021-12-16 01:10:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:19,566 INFO L225 Difference]: With dead ends: 438 [2021-12-16 01:10:19,566 INFO L226 Difference]: Without dead ends: 282 [2021-12-16 01:10:19,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:19,567 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 7 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:19,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 776 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-16 01:10:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-12-16 01:10:19,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 232 states have (on average 1.2629310344827587) internal successors, (293), 234 states have internal predecessors, (293), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-16 01:10:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 367 transitions. [2021-12-16 01:10:19,575 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 367 transitions. Word has length 225 [2021-12-16 01:10:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:19,576 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 367 transitions. [2021-12-16 01:10:19,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 01:10:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 367 transitions. [2021-12-16 01:10:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-16 01:10:19,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:19,578 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:19,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:19,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:19,803 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:19,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash 147339615, now seen corresponding path program 1 times [2021-12-16 01:10:19,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:19,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583479667] [2021-12-16 01:10:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:19,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-16 01:10:19,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:19,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583479667] [2021-12-16 01:10:19,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583479667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:19,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:19,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:19,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105556765] [2021-12-16 01:10:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:19,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:19,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:19,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:19,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:19,908 INFO L87 Difference]: Start difference. First operand 282 states and 367 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-16 01:10:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:20,074 INFO L93 Difference]: Finished difference Result 481 states and 662 transitions. [2021-12-16 01:10:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 235 [2021-12-16 01:10:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:20,077 INFO L225 Difference]: With dead ends: 481 [2021-12-16 01:10:20,077 INFO L226 Difference]: Without dead ends: 326 [2021-12-16 01:10:20,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:20,078 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 187 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:20,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 653 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:10:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-16 01:10:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2021-12-16 01:10:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 232 states have (on average 1.2586206896551724) internal successors, (292), 233 states have internal predecessors, (292), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-12-16 01:10:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 364 transitions. [2021-12-16 01:10:20,090 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 364 transitions. Word has length 235 [2021-12-16 01:10:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:20,090 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 364 transitions. [2021-12-16 01:10:20,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-16 01:10:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 364 transitions. [2021-12-16 01:10:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-16 01:10:20,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:20,093 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:20,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 01:10:20,094 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash -459103186, now seen corresponding path program 1 times [2021-12-16 01:10:20,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:20,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580779089] [2021-12-16 01:10:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:20,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-16 01:10:20,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:20,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580779089] [2021-12-16 01:10:20,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580779089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:20,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:20,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:20,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912327169] [2021-12-16 01:10:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:20,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:20,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:20,265 INFO L87 Difference]: Start difference. First operand 281 states and 364 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 01:10:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:20,653 INFO L93 Difference]: Finished difference Result 659 states and 882 transitions. [2021-12-16 01:10:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:20,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 237 [2021-12-16 01:10:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:20,657 INFO L225 Difference]: With dead ends: 659 [2021-12-16 01:10:20,657 INFO L226 Difference]: Without dead ends: 505 [2021-12-16 01:10:20,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:20,660 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 423 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:20,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 851 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-16 01:10:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 442. [2021-12-16 01:10:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 363 states have (on average 1.303030303030303) internal successors, (473), 365 states have internal predecessors, (473), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-16 01:10:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 581 transitions. [2021-12-16 01:10:20,678 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 581 transitions. Word has length 237 [2021-12-16 01:10:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:20,679 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 581 transitions. [2021-12-16 01:10:20,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 01:10:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 581 transitions. [2021-12-16 01:10:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-12-16 01:10:20,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:20,682 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:20,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 01:10:20,682 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:20,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1140511748, now seen corresponding path program 1 times [2021-12-16 01:10:20,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:20,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605891034] [2021-12-16 01:10:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:20,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-16 01:10:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-16 01:10:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-16 01:10:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-12-16 01:10:20,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605891034] [2021-12-16 01:10:20,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605891034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:20,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:20,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:20,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806635705] [2021-12-16 01:10:20,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:20,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:20,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:20,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:20,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:20,842 INFO L87 Difference]: Start difference. First operand 442 states and 581 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:21,114 INFO L93 Difference]: Finished difference Result 935 states and 1283 transitions. [2021-12-16 01:10:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 265 [2021-12-16 01:10:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:21,119 INFO L225 Difference]: With dead ends: 935 [2021-12-16 01:10:21,119 INFO L226 Difference]: Without dead ends: 697 [2021-12-16 01:10:21,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:21,121 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 218 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:21,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 623 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-12-16 01:10:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 535. [2021-12-16 01:10:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 446 states have (on average 1.3139013452914798) internal successors, (586), 449 states have internal predecessors, (586), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-16 01:10:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 704 transitions. [2021-12-16 01:10:21,152 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 704 transitions. Word has length 265 [2021-12-16 01:10:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:21,152 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 704 transitions. [2021-12-16 01:10:21,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 704 transitions. [2021-12-16 01:10:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-16 01:10:21,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:21,156 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:21,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 01:10:21,156 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:21,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:21,157 INFO L85 PathProgramCache]: Analyzing trace with hash -324333967, now seen corresponding path program 1 times [2021-12-16 01:10:21,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:21,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817926383] [2021-12-16 01:10:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:21,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-16 01:10:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-16 01:10:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-12-16 01:10:21,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:21,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817926383] [2021-12-16 01:10:21,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817926383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:21,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:21,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:21,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045416738] [2021-12-16 01:10:21,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:21,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:21,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:21,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:21,321 INFO L87 Difference]: Start difference. First operand 535 states and 704 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:21,596 INFO L93 Difference]: Finished difference Result 1133 states and 1548 transitions. [2021-12-16 01:10:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:21,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 266 [2021-12-16 01:10:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:21,602 INFO L225 Difference]: With dead ends: 1133 [2021-12-16 01:10:21,602 INFO L226 Difference]: Without dead ends: 837 [2021-12-16 01:10:21,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:21,603 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 221 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:21,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 657 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-12-16 01:10:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 659. [2021-12-16 01:10:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 558 states have (on average 1.3261648745519714) internal successors, (740), 563 states have internal predecessors, (740), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-16 01:10:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 870 transitions. [2021-12-16 01:10:21,646 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 870 transitions. Word has length 266 [2021-12-16 01:10:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:21,647 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 870 transitions. [2021-12-16 01:10:21,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 870 transitions. [2021-12-16 01:10:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-16 01:10:21,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:21,651 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:21,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 01:10:21,652 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1407639519, now seen corresponding path program 1 times [2021-12-16 01:10:21,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:21,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901832453] [2021-12-16 01:10:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:21,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-16 01:10:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2021-12-16 01:10:21,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:21,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901832453] [2021-12-16 01:10:21,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901832453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567092871] [2021-12-16 01:10:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:21,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:21,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:21,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:21,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 01:10:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:21,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-16 01:10:22,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567092871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:22,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:22,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-16 01:10:22,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227816649] [2021-12-16 01:10:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:22,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:22,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:22,306 INFO L87 Difference]: Start difference. First operand 659 states and 870 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:22,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:22,378 INFO L93 Difference]: Finished difference Result 1053 states and 1426 transitions. [2021-12-16 01:10:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:22,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 267 [2021-12-16 01:10:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:22,382 INFO L225 Difference]: With dead ends: 1053 [2021-12-16 01:10:22,382 INFO L226 Difference]: Without dead ends: 659 [2021-12-16 01:10:22,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:10:22,384 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 51 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:22,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 693 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-16 01:10:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2021-12-16 01:10:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 558 states have (on average 1.3154121863799284) internal successors, (734), 563 states have internal predecessors, (734), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-16 01:10:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 864 transitions. [2021-12-16 01:10:22,429 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 864 transitions. Word has length 267 [2021-12-16 01:10:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:22,430 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 864 transitions. [2021-12-16 01:10:22,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 864 transitions. [2021-12-16 01:10:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-16 01:10:22,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:22,434 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:22,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:22,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-16 01:10:22,648 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1853291600, now seen corresponding path program 1 times [2021-12-16 01:10:22,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:22,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160993519] [2021-12-16 01:10:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:22,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-16 01:10:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-12-16 01:10:22,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:22,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160993519] [2021-12-16 01:10:22,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160993519] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:22,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123037913] [2021-12-16 01:10:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:22,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:22,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:22,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 01:10:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:22,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-12-16 01:10:23,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:23,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123037913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:23,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:23,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-16 01:10:23,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263365106] [2021-12-16 01:10:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:23,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:23,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:23,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:23,302 INFO L87 Difference]: Start difference. First operand 659 states and 864 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:23,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:23,367 INFO L93 Difference]: Finished difference Result 1053 states and 1412 transitions. [2021-12-16 01:10:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:23,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 268 [2021-12-16 01:10:23,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:23,370 INFO L225 Difference]: With dead ends: 1053 [2021-12-16 01:10:23,370 INFO L226 Difference]: Without dead ends: 671 [2021-12-16 01:10:23,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:10:23,372 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 15 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:23,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 716 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-12-16 01:10:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2021-12-16 01:10:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 568 states have (on average 1.3169014084507042) internal successors, (748), 573 states have internal predecessors, (748), 65 states have call successors, (65), 37 states have call predecessors, (65), 37 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-16 01:10:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 878 transitions. [2021-12-16 01:10:23,408 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 878 transitions. Word has length 268 [2021-12-16 01:10:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:23,409 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 878 transitions. [2021-12-16 01:10:23,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 878 transitions. [2021-12-16 01:10:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-16 01:10:23,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:23,411 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:23,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:23,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-16 01:10:23,631 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:23,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1384676539, now seen corresponding path program 1 times [2021-12-16 01:10:23,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:23,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899284707] [2021-12-16 01:10:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:23,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-12-16 01:10:23,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:23,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899284707] [2021-12-16 01:10:23,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899284707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:23,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:23,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:10:23,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710152256] [2021-12-16 01:10:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:23,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:10:23,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:10:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:10:23,789 INFO L87 Difference]: Start difference. First operand 671 states and 878 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 01:10:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:24,156 INFO L93 Difference]: Finished difference Result 947 states and 1309 transitions. [2021-12-16 01:10:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 269 [2021-12-16 01:10:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:24,160 INFO L225 Difference]: With dead ends: 947 [2021-12-16 01:10:24,161 INFO L226 Difference]: Without dead ends: 945 [2021-12-16 01:10:24,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:24,162 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 264 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:24,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 1833 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-12-16 01:10:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 677. [2021-12-16 01:10:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 572 states have (on average 1.3146853146853146) internal successors, (752), 578 states have internal predecessors, (752), 66 states have call successors, (66), 38 states have call predecessors, (66), 38 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-16 01:10:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 884 transitions. [2021-12-16 01:10:24,189 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 884 transitions. Word has length 269 [2021-12-16 01:10:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:24,190 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 884 transitions. [2021-12-16 01:10:24,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 01:10:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 884 transitions. [2021-12-16 01:10:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-16 01:10:24,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:24,192 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:24,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 01:10:24,193 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1259990170, now seen corresponding path program 1 times [2021-12-16 01:10:24,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:24,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683021286] [2021-12-16 01:10:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:24,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2021-12-16 01:10:24,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:24,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683021286] [2021-12-16 01:10:24,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683021286] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:24,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280516063] [2021-12-16 01:10:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:24,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:24,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:24,447 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:24,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 01:10:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 01:10:24,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-12-16 01:10:25,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2021-12-16 01:10:25,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280516063] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:25,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:25,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2021-12-16 01:10:25,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817616967] [2021-12-16 01:10:25,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:25,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 01:10:25,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:25,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 01:10:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-16 01:10:25,644 INFO L87 Difference]: Start difference. First operand 677 states and 884 transitions. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-16 01:10:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:27,132 INFO L93 Difference]: Finished difference Result 1937 states and 2719 transitions. [2021-12-16 01:10:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 01:10:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 277 [2021-12-16 01:10:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:27,140 INFO L225 Difference]: With dead ends: 1937 [2021-12-16 01:10:27,140 INFO L226 Difference]: Without dead ends: 1537 [2021-12-16 01:10:27,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2021-12-16 01:10:27,142 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 767 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:27,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 3382 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:10:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2021-12-16 01:10:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 948. [2021-12-16 01:10:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 803 states have (on average 1.3088418430884183) internal successors, (1051), 810 states have internal predecessors, (1051), 90 states have call successors, (90), 51 states have call predecessors, (90), 54 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-16 01:10:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1236 transitions. [2021-12-16 01:10:27,201 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1236 transitions. Word has length 277 [2021-12-16 01:10:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:27,202 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1236 transitions. [2021-12-16 01:10:27,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-16 01:10:27,202 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1236 transitions. [2021-12-16 01:10:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-16 01:10:27,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:27,204 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:27,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:27,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:27,428 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2073363109, now seen corresponding path program 1 times [2021-12-16 01:10:27,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:27,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338988893] [2021-12-16 01:10:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:27,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-12-16 01:10:27,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:27,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338988893] [2021-12-16 01:10:27,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338988893] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:27,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512482939] [2021-12-16 01:10:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:27,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:27,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:27,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:27,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 01:10:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:27,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-12-16 01:10:28,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:28,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512482939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:28,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:28,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:28,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655766153] [2021-12-16 01:10:28,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:28,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:28,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:28,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:28,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:28,152 INFO L87 Difference]: Start difference. First operand 948 states and 1236 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 01:10:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:28,212 INFO L93 Difference]: Finished difference Result 1759 states and 2336 transitions. [2021-12-16 01:10:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:28,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 277 [2021-12-16 01:10:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:28,216 INFO L225 Difference]: With dead ends: 1759 [2021-12-16 01:10:28,217 INFO L226 Difference]: Without dead ends: 932 [2021-12-16 01:10:28,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:28,222 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 11 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:28,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 716 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-12-16 01:10:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2021-12-16 01:10:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 792 states have (on average 1.2967171717171717) internal successors, (1027), 799 states have internal predecessors, (1027), 86 states have call successors, (86), 51 states have call predecessors, (86), 53 states have return successors, (90), 85 states have call predecessors, (90), 86 states have call successors, (90) [2021-12-16 01:10:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1203 transitions. [2021-12-16 01:10:28,255 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1203 transitions. Word has length 277 [2021-12-16 01:10:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:28,255 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1203 transitions. [2021-12-16 01:10:28,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 01:10:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1203 transitions. [2021-12-16 01:10:28,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-16 01:10:28,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:28,258 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:28,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:28,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-16 01:10:28,484 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1844923738, now seen corresponding path program 1 times [2021-12-16 01:10:28,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:28,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189601881] [2021-12-16 01:10:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:28,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 01:10:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:10:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-16 01:10:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-16 01:10:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-16 01:10:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-16 01:10:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-16 01:10:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-16 01:10:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-16 01:10:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-12-16 01:10:28,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189601881] [2021-12-16 01:10:28,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189601881] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227087161] [2021-12-16 01:10:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:28,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:28,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:28,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:28,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 01:10:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:28,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:28,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-12-16 01:10:29,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:29,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227087161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:29,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:29,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:29,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072820506] [2021-12-16 01:10:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:29,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:29,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:29,131 INFO L87 Difference]: Start difference. First operand 932 states and 1203 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:29,206 INFO L93 Difference]: Finished difference Result 1592 states and 2097 transitions. [2021-12-16 01:10:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:29,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 280 [2021-12-16 01:10:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:29,212 INFO L225 Difference]: With dead ends: 1592 [2021-12-16 01:10:29,212 INFO L226 Difference]: Without dead ends: 772 [2021-12-16 01:10:29,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:29,214 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 8 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:29,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 719 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-12-16 01:10:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2021-12-16 01:10:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 650 states have (on average 1.2938461538461539) internal successors, (841), 657 states have internal predecessors, (841), 77 states have call successors, (77), 44 states have call predecessors, (77), 44 states have return successors, (77), 74 states have call predecessors, (77), 77 states have call successors, (77) [2021-12-16 01:10:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 995 transitions. [2021-12-16 01:10:29,244 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 995 transitions. Word has length 280 [2021-12-16 01:10:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:29,244 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 995 transitions. [2021-12-16 01:10:29,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 995 transitions. [2021-12-16 01:10:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-16 01:10:29,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:29,247 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:29,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:29,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:29,466 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2138091921, now seen corresponding path program 1 times [2021-12-16 01:10:29,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:29,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488447500] [2021-12-16 01:10:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:29,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-16 01:10:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-16 01:10:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-12-16 01:10:29,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:29,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488447500] [2021-12-16 01:10:29,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488447500] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:29,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870019565] [2021-12-16 01:10:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:29,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:29,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:29,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 01:10:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:29,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 01:10:30,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-16 01:10:30,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:30,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870019565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:30,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:30,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2021-12-16 01:10:30,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525991656] [2021-12-16 01:10:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:30,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:10:30,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:30,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:10:30,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2021-12-16 01:10:30,555 INFO L87 Difference]: Start difference. First operand 772 states and 995 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:31,448 INFO L93 Difference]: Finished difference Result 2172 states and 2920 transitions. [2021-12-16 01:10:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-16 01:10:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 292 [2021-12-16 01:10:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:31,457 INFO L225 Difference]: With dead ends: 2172 [2021-12-16 01:10:31,457 INFO L226 Difference]: Without dead ends: 1762 [2021-12-16 01:10:31,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1818, Unknown=0, NotChecked=0, Total=2070 [2021-12-16 01:10:31,459 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1177 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:31,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 2433 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:10:31,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2021-12-16 01:10:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 998. [2021-12-16 01:10:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 835 states have (on average 1.2838323353293413) internal successors, (1072), 840 states have internal predecessors, (1072), 103 states have call successors, (103), 59 states have call predecessors, (103), 59 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2021-12-16 01:10:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1278 transitions. [2021-12-16 01:10:31,505 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1278 transitions. Word has length 292 [2021-12-16 01:10:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:31,506 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1278 transitions. [2021-12-16 01:10:31,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1278 transitions. [2021-12-16 01:10:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-16 01:10:31,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:31,508 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:31,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:31,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-16 01:10:31,721 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1458819667, now seen corresponding path program 1 times [2021-12-16 01:10:31,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842071115] [2021-12-16 01:10:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:31,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-16 01:10:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-16 01:10:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-12-16 01:10:31,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842071115] [2021-12-16 01:10:31,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842071115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:31,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:31,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:10:31,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658904329] [2021-12-16 01:10:31,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:31,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:10:31,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:31,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:10:31,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:31,892 INFO L87 Difference]: Start difference. First operand 998 states and 1278 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 01:10:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:32,607 INFO L93 Difference]: Finished difference Result 2127 states and 2766 transitions. [2021-12-16 01:10:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 01:10:32,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 292 [2021-12-16 01:10:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:32,615 INFO L225 Difference]: With dead ends: 2127 [2021-12-16 01:10:32,615 INFO L226 Difference]: Without dead ends: 1494 [2021-12-16 01:10:32,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:10:32,618 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 629 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:32,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 860 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:10:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-12-16 01:10:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 909. [2021-12-16 01:10:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 762 states have (on average 1.2834645669291338) internal successors, (978), 766 states have internal predecessors, (978), 92 states have call successors, (92), 54 states have call predecessors, (92), 54 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2021-12-16 01:10:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1162 transitions. [2021-12-16 01:10:32,663 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1162 transitions. Word has length 292 [2021-12-16 01:10:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:32,663 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1162 transitions. [2021-12-16 01:10:32,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 01:10:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1162 transitions. [2021-12-16 01:10:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-16 01:10:32,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:32,666 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:32,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 01:10:32,666 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1982946184, now seen corresponding path program 1 times [2021-12-16 01:10:32,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:32,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333637247] [2021-12-16 01:10:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:32,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-16 01:10:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-12-16 01:10:32,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:32,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333637247] [2021-12-16 01:10:32,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333637247] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:32,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528987011] [2021-12-16 01:10:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:32,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:32,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:32,936 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:32,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 01:10:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:33,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 01:10:33,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-16 01:10:33,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:33,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528987011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:33,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:33,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 15 [2021-12-16 01:10:33,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426128804] [2021-12-16 01:10:33,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:33,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:10:33,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:10:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-16 01:10:33,527 INFO L87 Difference]: Start difference. First operand 909 states and 1162 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:34,505 INFO L93 Difference]: Finished difference Result 3098 states and 4192 transitions. [2021-12-16 01:10:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 01:10:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2021-12-16 01:10:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:34,518 INFO L225 Difference]: With dead ends: 3098 [2021-12-16 01:10:34,518 INFO L226 Difference]: Without dead ends: 2531 [2021-12-16 01:10:34,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2021-12-16 01:10:34,521 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1267 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 3959 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:34,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 3959 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:10:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2021-12-16 01:10:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1376. [2021-12-16 01:10:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1135 states have (on average 1.2801762114537445) internal successors, (1453), 1144 states have internal predecessors, (1453), 161 states have call successors, (161), 79 states have call predecessors, (161), 79 states have return successors, (161), 152 states have call predecessors, (161), 161 states have call successors, (161) [2021-12-16 01:10:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1775 transitions. [2021-12-16 01:10:34,623 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1775 transitions. Word has length 298 [2021-12-16 01:10:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:34,623 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1775 transitions. [2021-12-16 01:10:34,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1775 transitions. [2021-12-16 01:10:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-16 01:10:34,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:34,626 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:34,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:34,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-16 01:10:34,839 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2116959690, now seen corresponding path program 1 times [2021-12-16 01:10:34,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:34,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020870100] [2021-12-16 01:10:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:34,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-16 01:10:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2021-12-16 01:10:34,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:34,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020870100] [2021-12-16 01:10:34,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020870100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:34,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:34,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:10:34,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815254194] [2021-12-16 01:10:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:34,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:10:34,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:10:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:34,980 INFO L87 Difference]: Start difference. First operand 1376 states and 1775 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:35,333 INFO L93 Difference]: Finished difference Result 3439 states and 4653 transitions. [2021-12-16 01:10:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:10:35,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2021-12-16 01:10:35,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:35,343 INFO L225 Difference]: With dead ends: 3439 [2021-12-16 01:10:35,343 INFO L226 Difference]: Without dead ends: 2428 [2021-12-16 01:10:35,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:35,346 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 421 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:35,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1595 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-12-16 01:10:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1458. [2021-12-16 01:10:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1201 states have (on average 1.2905911740216487) internal successors, (1550), 1210 states have internal predecessors, (1550), 177 states have call successors, (177), 79 states have call predecessors, (177), 79 states have return successors, (177), 168 states have call predecessors, (177), 177 states have call successors, (177) [2021-12-16 01:10:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1904 transitions. [2021-12-16 01:10:35,447 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1904 transitions. Word has length 298 [2021-12-16 01:10:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:35,447 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 1904 transitions. [2021-12-16 01:10:35,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1904 transitions. [2021-12-16 01:10:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-16 01:10:35,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:35,450 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:35,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 01:10:35,450 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:35,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1095891336, now seen corresponding path program 1 times [2021-12-16 01:10:35,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:35,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979425964] [2021-12-16 01:10:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:35,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-16 01:10:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-16 01:10:35,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:35,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979425964] [2021-12-16 01:10:35,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979425964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:35,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752808436] [2021-12-16 01:10:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:35,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:35,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:35,756 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:35,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 01:10:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 01:10:35,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-12-16 01:10:36,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:36,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752808436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:36,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2021-12-16 01:10:36,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729197513] [2021-12-16 01:10:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:36,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 01:10:36,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 01:10:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-12-16 01:10:36,431 INFO L87 Difference]: Start difference. First operand 1458 states and 1904 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 01:10:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:36,903 INFO L93 Difference]: Finished difference Result 3420 states and 4648 transitions. [2021-12-16 01:10:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:10:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 298 [2021-12-16 01:10:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:36,913 INFO L225 Difference]: With dead ends: 3420 [2021-12-16 01:10:36,913 INFO L226 Difference]: Without dead ends: 2313 [2021-12-16 01:10:36,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-12-16 01:10:36,917 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 497 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:36,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 2338 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2021-12-16 01:10:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 1563. [2021-12-16 01:10:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1286 states have (on average 1.2892690513219285) internal successors, (1658), 1296 states have internal predecessors, (1658), 192 states have call successors, (192), 84 states have call predecessors, (192), 84 states have return successors, (192), 182 states have call predecessors, (192), 192 states have call successors, (192) [2021-12-16 01:10:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2042 transitions. [2021-12-16 01:10:37,002 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2042 transitions. Word has length 298 [2021-12-16 01:10:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:37,003 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2042 transitions. [2021-12-16 01:10:37,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 01:10:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2042 transitions. [2021-12-16 01:10:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-12-16 01:10:37,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:37,006 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:37,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:37,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-16 01:10:37,219 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash -973687172, now seen corresponding path program 1 times [2021-12-16 01:10:37,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:37,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901123644] [2021-12-16 01:10:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:37,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-16 01:10:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-16 01:10:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-16 01:10:37,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:37,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901123644] [2021-12-16 01:10:37,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901123644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:37,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:37,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:37,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53656222] [2021-12-16 01:10:37,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:37,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:37,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:37,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:37,357 INFO L87 Difference]: Start difference. First operand 1563 states and 2042 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-16 01:10:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:37,877 INFO L93 Difference]: Finished difference Result 2681 states and 3531 transitions. [2021-12-16 01:10:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:37,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 312 [2021-12-16 01:10:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:37,883 INFO L225 Difference]: With dead ends: 2681 [2021-12-16 01:10:37,883 INFO L226 Difference]: Without dead ends: 1483 [2021-12-16 01:10:37,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:37,886 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 512 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:37,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 1030 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 01:10:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-12-16 01:10:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1208. [2021-12-16 01:10:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1006 states have (on average 1.2693836978131212) internal successors, (1277), 1012 states have internal predecessors, (1277), 141 states have call successors, (141), 60 states have call predecessors, (141), 60 states have return successors, (141), 135 states have call predecessors, (141), 141 states have call successors, (141) [2021-12-16 01:10:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1559 transitions. [2021-12-16 01:10:37,948 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1559 transitions. Word has length 312 [2021-12-16 01:10:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:37,948 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1559 transitions. [2021-12-16 01:10:37,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-16 01:10:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1559 transitions. [2021-12-16 01:10:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:37,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:37,953 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:37,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 01:10:37,953 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:37,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1681987816, now seen corresponding path program 1 times [2021-12-16 01:10:37,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:37,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402817298] [2021-12-16 01:10:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:37,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-12-16 01:10:38,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:38,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402817298] [2021-12-16 01:10:38,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402817298] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799314906] [2021-12-16 01:10:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:38,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:38,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:38,260 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:38,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 01:10:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:38,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-16 01:10:38,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 151 proven. 33 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-12-16 01:10:39,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2021-12-16 01:10:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799314906] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:39,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:39,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 9] total 32 [2021-12-16 01:10:39,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806749485] [2021-12-16 01:10:39,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:39,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-16 01:10:39,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:39,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-16 01:10:39,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-16 01:10:39,829 INFO L87 Difference]: Start difference. First operand 1208 states and 1559 transitions. Second operand has 32 states, 32 states have (on average 6.8125) internal successors, (218), 27 states have internal predecessors, (218), 8 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (46), 12 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-16 01:10:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:46,188 INFO L93 Difference]: Finished difference Result 5034 states and 6985 transitions. [2021-12-16 01:10:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-12-16 01:10:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.8125) internal successors, (218), 27 states have internal predecessors, (218), 8 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (46), 12 states have call predecessors, (46), 8 states have call successors, (46) Word has length 352 [2021-12-16 01:10:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:46,210 INFO L225 Difference]: With dead ends: 5034 [2021-12-16 01:10:46,210 INFO L226 Difference]: Without dead ends: 4193 [2021-12-16 01:10:46,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 778 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3705 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1067, Invalid=12505, Unknown=0, NotChecked=0, Total=13572 [2021-12-16 01:10:46,215 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 2371 mSDsluCounter, 9355 mSDsCounter, 0 mSdLazyCounter, 9611 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 9946 SdHoareTripleChecker+Invalid, 10693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 9611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:46,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 9946 Invalid, 10693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 9611 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-16 01:10:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2021-12-16 01:10:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 1912. [2021-12-16 01:10:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1584 states have (on average 1.2771464646464648) internal successors, (2023), 1596 states have internal predecessors, (2023), 216 states have call successors, (216), 100 states have call predecessors, (216), 111 states have return successors, (235), 215 states have call predecessors, (235), 216 states have call successors, (235) [2021-12-16 01:10:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2474 transitions. [2021-12-16 01:10:46,353 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2474 transitions. Word has length 352 [2021-12-16 01:10:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:46,353 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 2474 transitions. [2021-12-16 01:10:46,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.8125) internal successors, (218), 27 states have internal predecessors, (218), 8 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (46), 12 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-16 01:10:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2474 transitions. [2021-12-16 01:10:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:46,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:46,358 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:46,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:46,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-16 01:10:46,579 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1132385929, now seen corresponding path program 1 times [2021-12-16 01:10:46,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:46,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029163368] [2021-12-16 01:10:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:46,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2021-12-16 01:10:46,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:46,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029163368] [2021-12-16 01:10:46,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029163368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:46,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:46,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:10:46,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093039095] [2021-12-16 01:10:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:46,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:10:46,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:10:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:10:46,740 INFO L87 Difference]: Start difference. First operand 1912 states and 2474 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 01:10:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:47,653 INFO L93 Difference]: Finished difference Result 4062 states and 5369 transitions. [2021-12-16 01:10:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 01:10:47,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 352 [2021-12-16 01:10:47,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:47,661 INFO L225 Difference]: With dead ends: 4062 [2021-12-16 01:10:47,662 INFO L226 Difference]: Without dead ends: 2915 [2021-12-16 01:10:47,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:10:47,664 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 577 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:47,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 2321 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:10:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-12-16 01:10:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1780. [2021-12-16 01:10:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1480 states have (on average 1.2655405405405404) internal successors, (1873), 1492 states have internal predecessors, (1873), 192 states have call successors, (192), 97 states have call predecessors, (192), 107 states have return successors, (205), 190 states have call predecessors, (205), 192 states have call successors, (205) [2021-12-16 01:10:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2270 transitions. [2021-12-16 01:10:47,773 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2270 transitions. Word has length 352 [2021-12-16 01:10:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:47,773 INFO L470 AbstractCegarLoop]: Abstraction has 1780 states and 2270 transitions. [2021-12-16 01:10:47,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 01:10:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2270 transitions. [2021-12-16 01:10:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:47,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:47,780 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:47,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 01:10:47,781 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash -878367351, now seen corresponding path program 1 times [2021-12-16 01:10:47,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:47,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468535257] [2021-12-16 01:10:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:47,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-12-16 01:10:47,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:47,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468535257] [2021-12-16 01:10:47,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468535257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:47,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:47,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:10:47,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452852890] [2021-12-16 01:10:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:47,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:10:47,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:10:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:47,917 INFO L87 Difference]: Start difference. First operand 1780 states and 2270 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 01:10:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:48,269 INFO L93 Difference]: Finished difference Result 3095 states and 3984 transitions. [2021-12-16 01:10:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:10:48,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 352 [2021-12-16 01:10:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:48,275 INFO L225 Difference]: With dead ends: 3095 [2021-12-16 01:10:48,275 INFO L226 Difference]: Without dead ends: 1789 [2021-12-16 01:10:48,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:10:48,278 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 379 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:48,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 515 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2021-12-16 01:10:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1786. [2021-12-16 01:10:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1486 states have (on average 1.2637954239569313) internal successors, (1878), 1498 states have internal predecessors, (1878), 192 states have call successors, (192), 97 states have call predecessors, (192), 107 states have return successors, (205), 190 states have call predecessors, (205), 192 states have call successors, (205) [2021-12-16 01:10:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2275 transitions. [2021-12-16 01:10:48,379 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2275 transitions. Word has length 352 [2021-12-16 01:10:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:48,379 INFO L470 AbstractCegarLoop]: Abstraction has 1786 states and 2275 transitions. [2021-12-16 01:10:48,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 01:10:48,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2275 transitions. [2021-12-16 01:10:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:48,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:48,384 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:48,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 01:10:48,384 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:48,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash 812650473, now seen corresponding path program 1 times [2021-12-16 01:10:48,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:48,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001223746] [2021-12-16 01:10:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:48,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2021-12-16 01:10:48,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:48,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001223746] [2021-12-16 01:10:48,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001223746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:48,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:48,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:48,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909888450] [2021-12-16 01:10:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:48,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:48,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:48,500 INFO L87 Difference]: Start difference. First operand 1786 states and 2275 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 01:10:48,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:48,852 INFO L93 Difference]: Finished difference Result 4520 states and 5805 transitions. [2021-12-16 01:10:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:48,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2021-12-16 01:10:48,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:48,858 INFO L225 Difference]: With dead ends: 4520 [2021-12-16 01:10:48,858 INFO L226 Difference]: Without dead ends: 3116 [2021-12-16 01:10:48,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:48,861 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 216 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:48,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 672 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-12-16 01:10:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2065. [2021-12-16 01:10:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1765 states have (on average 1.2600566572237961) internal successors, (2224), 1777 states have internal predecessors, (2224), 192 states have call successors, (192), 97 states have call predecessors, (192), 107 states have return successors, (205), 190 states have call predecessors, (205), 192 states have call successors, (205) [2021-12-16 01:10:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2621 transitions. [2021-12-16 01:10:48,993 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2621 transitions. Word has length 352 [2021-12-16 01:10:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:48,994 INFO L470 AbstractCegarLoop]: Abstraction has 2065 states and 2621 transitions. [2021-12-16 01:10:48,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 01:10:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2621 transitions. [2021-12-16 01:10:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:48,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:48,999 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:48,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 01:10:48,999 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash -909352213, now seen corresponding path program 1 times [2021-12-16 01:10:49,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:49,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436433449] [2021-12-16 01:10:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:49,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-12-16 01:10:49,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:49,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436433449] [2021-12-16 01:10:49,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436433449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:49,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:49,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:49,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094950583] [2021-12-16 01:10:49,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:49,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:49,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:49,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:49,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:49,146 INFO L87 Difference]: Start difference. First operand 2065 states and 2621 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-16 01:10:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:49,404 INFO L93 Difference]: Finished difference Result 4149 states and 5267 transitions. [2021-12-16 01:10:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:10:49,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 352 [2021-12-16 01:10:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:49,410 INFO L225 Difference]: With dead ends: 4149 [2021-12-16 01:10:49,410 INFO L226 Difference]: Without dead ends: 2025 [2021-12-16 01:10:49,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:49,413 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 107 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:49,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 738 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:10:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2021-12-16 01:10:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2025. [2021-12-16 01:10:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 1735 states have (on average 1.2380403458213256) internal successors, (2148), 1747 states have internal predecessors, (2148), 192 states have call successors, (192), 97 states have call predecessors, (192), 97 states have return successors, (192), 180 states have call predecessors, (192), 192 states have call successors, (192) [2021-12-16 01:10:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2532 transitions. [2021-12-16 01:10:49,533 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2532 transitions. Word has length 352 [2021-12-16 01:10:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:49,534 INFO L470 AbstractCegarLoop]: Abstraction has 2025 states and 2532 transitions. [2021-12-16 01:10:49,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-16 01:10:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2532 transitions. [2021-12-16 01:10:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-12-16 01:10:49,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:49,539 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:49,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 01:10:49,539 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1547089713, now seen corresponding path program 1 times [2021-12-16 01:10:49,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:49,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561473269] [2021-12-16 01:10:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:49,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-16 01:10:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-16 01:10:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-16 01:10:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-12-16 01:10:49,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:49,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561473269] [2021-12-16 01:10:49,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561473269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:49,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:49,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:49,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275025042] [2021-12-16 01:10:49,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:49,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:49,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:49,691 INFO L87 Difference]: Start difference. First operand 2025 states and 2532 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 01:10:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:49,940 INFO L93 Difference]: Finished difference Result 3621 states and 4557 transitions. [2021-12-16 01:10:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:49,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 362 [2021-12-16 01:10:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:49,945 INFO L225 Difference]: With dead ends: 3621 [2021-12-16 01:10:49,946 INFO L226 Difference]: Without dead ends: 1942 [2021-12-16 01:10:49,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:49,951 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 54 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:49,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 575 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:10:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-12-16 01:10:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1942. [2021-12-16 01:10:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1652 states have (on average 1.2257869249394673) internal successors, (2025), 1664 states have internal predecessors, (2025), 192 states have call successors, (192), 97 states have call predecessors, (192), 97 states have return successors, (192), 180 states have call predecessors, (192), 192 states have call successors, (192) [2021-12-16 01:10:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2409 transitions. [2021-12-16 01:10:50,037 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2409 transitions. Word has length 362 [2021-12-16 01:10:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:50,038 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 2409 transitions. [2021-12-16 01:10:50,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 01:10:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2409 transitions. [2021-12-16 01:10:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-12-16 01:10:50,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:50,042 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:50,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 01:10:50,043 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2074094901, now seen corresponding path program 1 times [2021-12-16 01:10:50,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878439268] [2021-12-16 01:10:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:50,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-16 01:10:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-16 01:10:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-16 01:10:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-16 01:10:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-16 01:10:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-16 01:10:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-16 01:10:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-16 01:10:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-16 01:10:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-16 01:10:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-16 01:10:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-16 01:10:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-16 01:10:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2021-12-16 01:10:50,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:50,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878439268] [2021-12-16 01:10:50,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878439268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:50,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683144689] [2021-12-16 01:10:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:50,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:50,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:50,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 01:10:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:50,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-16 01:10:50,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 293 proven. 92 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-12-16 01:10:51,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 51 proven. 199 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2021-12-16 01:10:52,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683144689] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:52,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:52,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 42 [2021-12-16 01:10:52,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511507310] [2021-12-16 01:10:52,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:52,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-16 01:10:52,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:52,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-16 01:10:52,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1614, Unknown=0, NotChecked=0, Total=1722 [2021-12-16 01:10:52,300 INFO L87 Difference]: Start difference. First operand 1942 states and 2409 transitions. Second operand has 42 states, 41 states have (on average 7.317073170731708) internal successors, (300), 36 states have internal predecessors, (300), 12 states have call successors, (61), 10 states have call predecessors, (61), 12 states have return successors, (60), 13 states have call predecessors, (60), 11 states have call successors, (60) [2021-12-16 01:11:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:11:01,742 INFO L93 Difference]: Finished difference Result 7163 states and 9262 transitions. [2021-12-16 01:11:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-12-16 01:11:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 7.317073170731708) internal successors, (300), 36 states have internal predecessors, (300), 12 states have call successors, (61), 10 states have call predecessors, (61), 12 states have return successors, (60), 13 states have call predecessors, (60), 11 states have call successors, (60) Word has length 363 [2021-12-16 01:11:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:11:01,755 INFO L225 Difference]: With dead ends: 7163 [2021-12-16 01:11:01,755 INFO L226 Difference]: Without dead ends: 5757 [2021-12-16 01:11:01,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8327 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1867, Invalid=25855, Unknown=0, NotChecked=0, Total=27722 [2021-12-16 01:11:01,764 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 2975 mSDsluCounter, 16477 mSDsCounter, 0 mSdLazyCounter, 13693 mSolverCounterSat, 957 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 17102 SdHoareTripleChecker+Invalid, 14650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 957 IncrementalHoareTripleChecker+Valid, 13693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:11:01,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2989 Valid, 17102 Invalid, 14650 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [957 Valid, 13693 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-16 01:11:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-12-16 01:11:01,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 2379. [2021-12-16 01:11:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2041 states have (on average 1.2141107300342968) internal successors, (2478), 2053 states have internal predecessors, (2478), 218 states have call successors, (218), 117 states have call predecessors, (218), 119 states have return successors, (222), 208 states have call predecessors, (222), 218 states have call successors, (222) [2021-12-16 01:11:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 2918 transitions. [2021-12-16 01:11:01,937 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 2918 transitions. Word has length 363 [2021-12-16 01:11:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:11:01,937 INFO L470 AbstractCegarLoop]: Abstraction has 2379 states and 2918 transitions. [2021-12-16 01:11:01,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 7.317073170731708) internal successors, (300), 36 states have internal predecessors, (300), 12 states have call successors, (61), 10 states have call predecessors, (61), 12 states have return successors, (60), 13 states have call predecessors, (60), 11 states have call successors, (60) [2021-12-16 01:11:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 2918 transitions. [2021-12-16 01:11:01,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-12-16 01:11:01,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:11:01,943 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:11:01,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 01:11:02,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:11:02,172 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:11:02,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:11:02,172 INFO L85 PathProgramCache]: Analyzing trace with hash 600622948, now seen corresponding path program 1 times [2021-12-16 01:11:02,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:11:02,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861937024] [2021-12-16 01:11:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:11:02,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:11:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:11:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:11:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:11:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 01:11:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 01:11:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:11:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:11:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:11:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 01:11:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:11:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:11:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:11:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-16 01:11:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:11:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:11:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:11:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-16 01:11:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-16 01:11:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-16 01:11:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-16 01:11:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-16 01:11:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-16 01:11:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-16 01:11:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-16 01:11:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-16 01:11:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-16 01:11:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-12-16 01:11:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-16 01:11:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-12-16 01:11:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-16 01:11:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-16 01:11:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2021-12-16 01:11:02,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:11:02,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861937024] [2021-12-16 01:11:02,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861937024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:11:02,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482516435] [2021-12-16 01:11:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:11:02,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:11:02,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:11:02,290 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:11:02,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 01:11:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:11:02,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:11:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-12-16 01:11:02,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:11:02,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482516435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:11:02,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:11:02,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:11:02,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586548460] [2021-12-16 01:11:02,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:11:02,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:11:02,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:11:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:11:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:11:02,939 INFO L87 Difference]: Start difference. First operand 2379 states and 2918 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-16 01:11:03,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:11:03,072 INFO L93 Difference]: Finished difference Result 4292 states and 5300 transitions. [2021-12-16 01:11:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:11:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 366 [2021-12-16 01:11:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:11:03,077 INFO L225 Difference]: With dead ends: 4292 [2021-12-16 01:11:03,077 INFO L226 Difference]: Without dead ends: 1914 [2021-12-16 01:11:03,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:11:03,081 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 28 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:11:03,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 679 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:11:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-12-16 01:11:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1914. [2021-12-16 01:11:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1631 states have (on average 1.2256284488044145) internal successors, (1999), 1641 states have internal predecessors, (1999), 188 states have call successors, (188), 94 states have call predecessors, (188), 94 states have return successors, (188), 178 states have call predecessors, (188), 188 states have call successors, (188) [2021-12-16 01:11:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2375 transitions. [2021-12-16 01:11:03,212 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2375 transitions. Word has length 366 [2021-12-16 01:11:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:11:03,213 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 2375 transitions. [2021-12-16 01:11:03,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-16 01:11:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2375 transitions. [2021-12-16 01:11:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-12-16 01:11:03,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:11:03,218 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:11:03,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 01:11:03,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:11:03,444 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:11:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:11:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1135891243, now seen corresponding path program 1 times [2021-12-16 01:11:03,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:11:03,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476188921] [2021-12-16 01:11:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:11:03,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:11:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:11:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:11:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:11:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:11:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:11:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:11:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:11:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:11:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:11:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:11:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:11:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:11:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:11:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:11:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:11:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:11:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:11:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:11:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:11:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-16 01:11:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-16 01:11:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-16 01:11:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-16 01:11:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-16 01:11:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:11:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-16 01:11:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-16 01:11:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-16 01:11:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-16 01:11:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-12-16 01:11:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-12-16 01:11:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-16 01:11:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2021-12-16 01:11:03,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:11:03,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476188921] [2021-12-16 01:11:03,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476188921] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:11:03,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114701630] [2021-12-16 01:11:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:11:03,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:11:03,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:11:03,717 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:11:03,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 01:11:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:03,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-16 01:11:03,938 INFO L286 TraceCheckSpWp]: Computing forward predicates...