./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.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 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:30:29,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:30:29,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:30:29,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:30:29,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:30:29,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:30:29,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:30:29,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:30:29,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:30:29,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:30:29,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:30:29,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:30:29,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:30:29,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:30:29,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:30:29,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:30:29,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:30:29,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:30:29,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:30:29,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:30:29,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:30:29,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:30:29,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:30:29,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:30:29,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:30:29,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:30:29,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:30:29,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:30:29,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:30:29,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:30:29,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:30:29,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:30:29,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:30:29,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:30:29,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:30:29,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:30:29,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:30:29,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:30:29,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:30:29,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:30:29,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:30:29,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:30:30,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:30:30,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:30:30,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:30:30,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:30:30,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:30:30,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:30:30,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:30:30,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:30:30,005 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:30:30,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:30:30,006 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:30:30,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:30:30,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:30:30,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:30:30,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:30:30,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:30:30,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:30:30,007 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:30:30,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:30:30,008 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:30:30,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:30:30,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:30:30,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:30:30,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:30:30,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:30:30,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:30:30,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:30:30,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:30:30,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:30:30,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:30:30,010 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:30:30,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:30:30,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:30:30,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:30:30,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 [2021-12-17 16:30:30,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:30:30,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:30:30,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:30:30,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:30:30,225 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:30:30,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 16:30:30,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c58538f3/6c3d376177384bb2bed5c5a2bce141e2/FLAG2447a44d9 [2021-12-17 16:30:30,642 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:30:30,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 16:30:30,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c58538f3/6c3d376177384bb2bed5c5a2bce141e2/FLAG2447a44d9 [2021-12-17 16:30:31,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c58538f3/6c3d376177384bb2bed5c5a2bce141e2 [2021-12-17 16:30:31,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:30:31,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:30:31,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:30:31,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:30:31,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:30:31,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ead3099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31, skipping insertion in model container [2021-12-17 16:30:31,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:30:31,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:30:31,352 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2021-12-17 16:30:31,375 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2021-12-17 16:30:31,385 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2021-12-17 16:30:31,391 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2021-12-17 16:30:31,405 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2021-12-17 16:30:31,411 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2021-12-17 16:30:31,420 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2021-12-17 16:30:31,427 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2021-12-17 16:30:31,431 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2021-12-17 16:30:31,436 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2021-12-17 16:30:31,445 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2021-12-17 16:30:31,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:30:31,507 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:30:31,542 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2021-12-17 16:30:31,553 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2021-12-17 16:30:31,559 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2021-12-17 16:30:31,560 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2021-12-17 16:30:31,563 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2021-12-17 16:30:31,565 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2021-12-17 16:30:31,567 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2021-12-17 16:30:31,571 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2021-12-17 16:30:31,573 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2021-12-17 16:30:31,575 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2021-12-17 16:30:31,594 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-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2021-12-17 16:30:31,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:30:31,638 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:30:31,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31 WrapperNode [2021-12-17 16:30:31,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:30:31,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:30:31,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:30:31,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:30:31,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,711 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1788 [2021-12-17 16:30:31,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:30:31,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:30:31,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:30:31,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:30:31,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:30:31,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:30:31,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:30:31,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:30:31,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (1/1) ... [2021-12-17 16:30:31,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:30:31,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:30:31,778 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) [2021-12-17 16:30:31,836 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 [2021-12-17 16:30:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:30:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:30:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:30:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:30:32,038 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:30:32,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:30:32,818 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:30:32,825 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:30:32,825 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:30:32,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:30:32 BoogieIcfgContainer [2021-12-17 16:30:32,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:30:32,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:30:32,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:30:32,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:30:32,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:30:31" (1/3) ... [2021-12-17 16:30:32,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38aba28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:30:32, skipping insertion in model container [2021-12-17 16:30:32,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:30:31" (2/3) ... [2021-12-17 16:30:32,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38aba28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:30:32, skipping insertion in model container [2021-12-17 16:30:32,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:30:32" (3/3) ... [2021-12-17 16:30:32,846 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-17 16:30:32,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:30:32,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-17 16:30:32,895 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:30:32,900 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 [2021-12-17 16:30:32,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-17 16:30:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 345 states have (on average 1.8376811594202898) internal successors, (634), 356 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-17 16:30:32,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:32,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:32,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1863160701, now seen corresponding path program 1 times [2021-12-17 16:30:32,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:32,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407429480] [2021-12-17 16:30:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:32,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:33,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:33,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407429480] [2021-12-17 16:30:33,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407429480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:33,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:33,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:30:33,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724850970] [2021-12-17 16:30:33,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:33,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:30:33,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:30:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:30:33,271 INFO L87 Difference]: Start difference. First operand has 357 states, 345 states have (on average 1.8376811594202898) internal successors, (634), 356 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:33,521 INFO L93 Difference]: Finished difference Result 569 states and 972 transitions. [2021-12-17 16:30:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:30:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-17 16:30:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:33,531 INFO L225 Difference]: With dead ends: 569 [2021-12-17 16:30:33,531 INFO L226 Difference]: Without dead ends: 314 [2021-12-17 16:30:33,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:30:33,536 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1480 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:33,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 403 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-17 16:30:33,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-12-17 16:30:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 303 states have (on average 1.2805280528052805) internal successors, (388), 313 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 388 transitions. [2021-12-17 16:30:33,571 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 388 transitions. Word has length 58 [2021-12-17 16:30:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:33,572 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 388 transitions. [2021-12-17 16:30:33,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 388 transitions. [2021-12-17 16:30:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-17 16:30:33,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:33,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:33,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:30:33,575 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:33,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 288741764, now seen corresponding path program 1 times [2021-12-17 16:30:33,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:33,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865133674] [2021-12-17 16:30:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:33,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:33,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865133674] [2021-12-17 16:30:33,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865133674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:33,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:33,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:30:33,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755360197] [2021-12-17 16:30:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:33,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:30:33,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:30:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:30:33,649 INFO L87 Difference]: Start difference. First operand 314 states and 388 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:33,783 INFO L93 Difference]: Finished difference Result 517 states and 658 transitions. [2021-12-17 16:30:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:30:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-12-17 16:30:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:33,785 INFO L225 Difference]: With dead ends: 517 [2021-12-17 16:30:33,785 INFO L226 Difference]: Without dead ends: 273 [2021-12-17 16:30:33,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:30:33,787 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 985 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:33,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 208 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:30:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-12-17 16:30:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-12-17 16:30:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 262 states have (on average 1.3053435114503817) internal successors, (342), 272 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 342 transitions. [2021-12-17 16:30:33,800 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 342 transitions. Word has length 59 [2021-12-17 16:30:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:33,800 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 342 transitions. [2021-12-17 16:30:33,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 342 transitions. [2021-12-17 16:30:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 16:30:33,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:33,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:33,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:30:33,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash 568036411, now seen corresponding path program 1 times [2021-12-17 16:30:33,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:33,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789719653] [2021-12-17 16:30:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:33,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:33,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:33,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789719653] [2021-12-17 16:30:33,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789719653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:33,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:33,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:30:33,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533675720] [2021-12-17 16:30:33,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:33,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:30:33,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:33,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:30:33,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:30:33,865 INFO L87 Difference]: Start difference. First operand 273 states and 342 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:33,982 INFO L93 Difference]: Finished difference Result 476 states and 611 transitions. [2021-12-17 16:30:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:30:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-17 16:30:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:33,984 INFO L225 Difference]: With dead ends: 476 [2021-12-17 16:30:33,984 INFO L226 Difference]: Without dead ends: 254 [2021-12-17 16:30:33,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:30:33,986 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 905 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:33,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 200 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:30:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-17 16:30:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-12-17 16:30:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 243 states have (on average 1.316872427983539) internal successors, (320), 253 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 320 transitions. [2021-12-17 16:30:33,995 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 320 transitions. Word has length 60 [2021-12-17 16:30:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:33,995 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 320 transitions. [2021-12-17 16:30:33,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 320 transitions. [2021-12-17 16:30:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-17 16:30:33,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:33,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:33,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:30:33,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:33,998 INFO L85 PathProgramCache]: Analyzing trace with hash -715476529, now seen corresponding path program 1 times [2021-12-17 16:30:33,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:33,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197165856] [2021-12-17 16:30:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:33,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:34,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:34,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197165856] [2021-12-17 16:30:34,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197165856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:34,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:34,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:30:34,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387715458] [2021-12-17 16:30:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:34,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:30:34,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:30:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:30:34,049 INFO L87 Difference]: Start difference. First operand 254 states and 320 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:34,212 INFO L93 Difference]: Finished difference Result 457 states and 588 transitions. [2021-12-17 16:30:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:30:34,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-17 16:30:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:34,214 INFO L225 Difference]: With dead ends: 457 [2021-12-17 16:30:34,214 INFO L226 Difference]: Without dead ends: 246 [2021-12-17 16:30:34,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:30:34,216 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 858 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:34,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 196 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:30:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-17 16:30:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-17 16:30:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3191489361702127) internal successors, (310), 245 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 310 transitions. [2021-12-17 16:30:34,231 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 310 transitions. Word has length 61 [2021-12-17 16:30:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:34,231 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 310 transitions. [2021-12-17 16:30:34,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 310 transitions. [2021-12-17 16:30:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-17 16:30:34,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:34,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:34,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:30:34,235 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 207205371, now seen corresponding path program 1 times [2021-12-17 16:30:34,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:34,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632058151] [2021-12-17 16:30:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:34,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:34,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:34,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632058151] [2021-12-17 16:30:34,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632058151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:34,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:34,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:34,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976013210] [2021-12-17 16:30:34,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:34,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:34,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:34,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:34,353 INFO L87 Difference]: Start difference. First operand 246 states and 310 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:34,870 INFO L93 Difference]: Finished difference Result 580 states and 772 transitions. [2021-12-17 16:30:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:34,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-17 16:30:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:34,872 INFO L225 Difference]: With dead ends: 580 [2021-12-17 16:30:34,872 INFO L226 Difference]: Without dead ends: 492 [2021-12-17 16:30:34,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:30:34,873 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 2056 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:34,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2056 Valid, 877 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:34,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-12-17 16:30:34,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 246. [2021-12-17 16:30:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 245 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 309 transitions. [2021-12-17 16:30:34,891 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 309 transitions. Word has length 62 [2021-12-17 16:30:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:34,891 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 309 transitions. [2021-12-17 16:30:34,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 309 transitions. [2021-12-17 16:30:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-17 16:30:34,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:34,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:34,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:30:34,892 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -201639857, now seen corresponding path program 1 times [2021-12-17 16:30:34,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485492391] [2021-12-17 16:30:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:34,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:34,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:34,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485492391] [2021-12-17 16:30:34,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485492391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:34,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:34,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:34,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244531848] [2021-12-17 16:30:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:34,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:34,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:34,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:34,985 INFO L87 Difference]: Start difference. First operand 246 states and 309 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:35,445 INFO L93 Difference]: Finished difference Result 485 states and 632 transitions. [2021-12-17 16:30:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:35,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-17 16:30:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:35,447 INFO L225 Difference]: With dead ends: 485 [2021-12-17 16:30:35,447 INFO L226 Difference]: Without dead ends: 480 [2021-12-17 16:30:35,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:30:35,447 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1425 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:35,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 912 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-17 16:30:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 246. [2021-12-17 16:30:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3106382978723403) internal successors, (308), 245 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 308 transitions. [2021-12-17 16:30:35,460 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 308 transitions. Word has length 62 [2021-12-17 16:30:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:35,461 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 308 transitions. [2021-12-17 16:30:35,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:35,461 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 308 transitions. [2021-12-17 16:30:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-17 16:30:35,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:35,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:35,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:30:35,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1938423665, now seen corresponding path program 1 times [2021-12-17 16:30:35,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:35,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372095249] [2021-12-17 16:30:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:35,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:35,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:35,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372095249] [2021-12-17 16:30:35,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372095249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:35,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:35,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:30:35,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251576441] [2021-12-17 16:30:35,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:35,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:30:35,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:30:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:30:35,590 INFO L87 Difference]: Start difference. First operand 246 states and 308 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:35,924 INFO L93 Difference]: Finished difference Result 485 states and 610 transitions. [2021-12-17 16:30:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:30:35,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-17 16:30:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:35,926 INFO L225 Difference]: With dead ends: 485 [2021-12-17 16:30:35,926 INFO L226 Difference]: Without dead ends: 352 [2021-12-17 16:30:35,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:30:35,927 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1621 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:35,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 632 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-17 16:30:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 246. [2021-12-17 16:30:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3063829787234043) internal successors, (307), 245 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 307 transitions. [2021-12-17 16:30:35,941 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 307 transitions. Word has length 62 [2021-12-17 16:30:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:35,941 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 307 transitions. [2021-12-17 16:30:35,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 307 transitions. [2021-12-17 16:30:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:30:35,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:35,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:35,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:30:35,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2031197374, now seen corresponding path program 1 times [2021-12-17 16:30:35,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:35,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808850340] [2021-12-17 16:30:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:35,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:36,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808850340] [2021-12-17 16:30:36,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808850340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:36,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:36,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:36,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656339865] [2021-12-17 16:30:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:36,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:36,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:36,025 INFO L87 Difference]: Start difference. First operand 246 states and 307 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:36,504 INFO L93 Difference]: Finished difference Result 539 states and 710 transitions. [2021-12-17 16:30:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:30:36,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:36,506 INFO L225 Difference]: With dead ends: 539 [2021-12-17 16:30:36,506 INFO L226 Difference]: Without dead ends: 480 [2021-12-17 16:30:36,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:30:36,507 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1813 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:36,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1813 Valid, 930 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-17 16:30:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 246. [2021-12-17 16:30:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3021276595744682) internal successors, (306), 245 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 306 transitions. [2021-12-17 16:30:36,519 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 306 transitions. Word has length 64 [2021-12-17 16:30:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:36,519 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 306 transitions. [2021-12-17 16:30:36,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 306 transitions. [2021-12-17 16:30:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:30:36,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:36,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:36,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:30:36,520 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash -119000272, now seen corresponding path program 1 times [2021-12-17 16:30:36,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:36,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27038934] [2021-12-17 16:30:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:36,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:36,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:36,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27038934] [2021-12-17 16:30:36,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27038934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:36,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:36,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:36,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472780612] [2021-12-17 16:30:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:36,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:36,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:36,598 INFO L87 Difference]: Start difference. First operand 246 states and 306 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:37,051 INFO L93 Difference]: Finished difference Result 559 states and 739 transitions. [2021-12-17 16:30:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:37,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:30:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:37,053 INFO L225 Difference]: With dead ends: 559 [2021-12-17 16:30:37,053 INFO L226 Difference]: Without dead ends: 488 [2021-12-17 16:30:37,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:30:37,054 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1484 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:37,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 1145 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-12-17 16:30:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 246. [2021-12-17 16:30:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.297872340425532) internal successors, (305), 245 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 305 transitions. [2021-12-17 16:30:37,067 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 305 transitions. Word has length 64 [2021-12-17 16:30:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:37,067 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 305 transitions. [2021-12-17 16:30:37,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 305 transitions. [2021-12-17 16:30:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:30:37,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:37,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:37,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:30:37,068 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash 153578736, now seen corresponding path program 1 times [2021-12-17 16:30:37,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:37,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293624190] [2021-12-17 16:30:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:37,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:37,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:37,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293624190] [2021-12-17 16:30:37,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293624190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:37,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:37,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:37,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288493098] [2021-12-17 16:30:37,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:37,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:37,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:37,144 INFO L87 Difference]: Start difference. First operand 246 states and 305 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:37,627 INFO L93 Difference]: Finished difference Result 554 states and 731 transitions. [2021-12-17 16:30:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:30:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:37,629 INFO L225 Difference]: With dead ends: 554 [2021-12-17 16:30:37,629 INFO L226 Difference]: Without dead ends: 488 [2021-12-17 16:30:37,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:30:37,630 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1505 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:37,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1152 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-12-17 16:30:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 246. [2021-12-17 16:30:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2936170212765958) internal successors, (304), 245 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 304 transitions. [2021-12-17 16:30:37,659 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 304 transitions. Word has length 64 [2021-12-17 16:30:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:37,659 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 304 transitions. [2021-12-17 16:30:37,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 304 transitions. [2021-12-17 16:30:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:30:37,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:37,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:37,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:30:37,661 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1520301075, now seen corresponding path program 1 times [2021-12-17 16:30:37,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723814139] [2021-12-17 16:30:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:37,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:37,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723814139] [2021-12-17 16:30:37,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723814139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:37,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:37,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:37,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093412514] [2021-12-17 16:30:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:37,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:37,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:37,724 INFO L87 Difference]: Start difference. First operand 246 states and 304 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:38,150 INFO L93 Difference]: Finished difference Result 536 states and 704 transitions. [2021-12-17 16:30:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:38,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:30:38,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:38,152 INFO L225 Difference]: With dead ends: 536 [2021-12-17 16:30:38,153 INFO L226 Difference]: Without dead ends: 480 [2021-12-17 16:30:38,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:30:38,153 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 946 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:38,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 982 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-17 16:30:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 246. [2021-12-17 16:30:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 245 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 303 transitions. [2021-12-17 16:30:38,185 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 303 transitions. Word has length 64 [2021-12-17 16:30:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:38,185 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 303 transitions. [2021-12-17 16:30:38,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 303 transitions. [2021-12-17 16:30:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:30:38,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:38,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:38,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:30:38,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2027506619, now seen corresponding path program 1 times [2021-12-17 16:30:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:38,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399840971] [2021-12-17 16:30:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:38,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:38,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399840971] [2021-12-17 16:30:38,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399840971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:38,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:38,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 16:30:38,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475666922] [2021-12-17 16:30:38,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:38,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 16:30:38,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:38,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 16:30:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:30:38,294 INFO L87 Difference]: Start difference. First operand 246 states and 303 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:39,289 INFO L93 Difference]: Finished difference Result 694 states and 926 transitions. [2021-12-17 16:30:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:30:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:30:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:39,292 INFO L225 Difference]: With dead ends: 694 [2021-12-17 16:30:39,292 INFO L226 Difference]: Without dead ends: 600 [2021-12-17 16:30:39,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-12-17 16:30:39,293 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1569 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:39,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 2037 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:30:39,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-17 16:30:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 246. [2021-12-17 16:30:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2851063829787235) internal successors, (302), 245 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 302 transitions. [2021-12-17 16:30:39,307 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 302 transitions. Word has length 64 [2021-12-17 16:30:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:39,308 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 302 transitions. [2021-12-17 16:30:39,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 302 transitions. [2021-12-17 16:30:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:30:39,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:39,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:39,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:30:39,309 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash -904154553, now seen corresponding path program 1 times [2021-12-17 16:30:39,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:39,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026632764] [2021-12-17 16:30:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:39,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:39,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:39,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026632764] [2021-12-17 16:30:39,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026632764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:39,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:39,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:39,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647134534] [2021-12-17 16:30:39,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:39,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:39,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:39,380 INFO L87 Difference]: Start difference. First operand 246 states and 302 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:39,914 INFO L93 Difference]: Finished difference Result 485 states and 624 transitions. [2021-12-17 16:30:39,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:39,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:30:39,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:39,916 INFO L225 Difference]: With dead ends: 485 [2021-12-17 16:30:39,916 INFO L226 Difference]: Without dead ends: 480 [2021-12-17 16:30:39,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:30:39,917 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1507 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:39,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1137 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:30:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-17 16:30:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 246. [2021-12-17 16:30:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2808510638297872) internal successors, (301), 245 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 301 transitions. [2021-12-17 16:30:39,931 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 301 transitions. Word has length 64 [2021-12-17 16:30:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:39,932 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 301 transitions. [2021-12-17 16:30:39,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 301 transitions. [2021-12-17 16:30:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:30:39,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:39,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:39,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:30:39,933 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1008042549, now seen corresponding path program 1 times [2021-12-17 16:30:39,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:39,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547559086] [2021-12-17 16:30:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:39,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:40,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:40,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547559086] [2021-12-17 16:30:40,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547559086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:40,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:40,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:40,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706471025] [2021-12-17 16:30:40,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:40,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:40,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:40,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:40,009 INFO L87 Difference]: Start difference. First operand 246 states and 301 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:40,705 INFO L93 Difference]: Finished difference Result 505 states and 652 transitions. [2021-12-17 16:30:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:30:40,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:30:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:40,707 INFO L225 Difference]: With dead ends: 505 [2021-12-17 16:30:40,707 INFO L226 Difference]: Without dead ends: 488 [2021-12-17 16:30:40,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:30:40,707 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1105 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:40,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 1645 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:30:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-12-17 16:30:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 246. [2021-12-17 16:30:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2765957446808511) internal successors, (300), 245 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 300 transitions. [2021-12-17 16:30:40,720 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 300 transitions. Word has length 64 [2021-12-17 16:30:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:40,721 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 300 transitions. [2021-12-17 16:30:40,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 300 transitions. [2021-12-17 16:30:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:30:40,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:40,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:40,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:30:40,722 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash 370944031, now seen corresponding path program 1 times [2021-12-17 16:30:40,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:40,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474616873] [2021-12-17 16:30:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:40,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:40,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:40,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474616873] [2021-12-17 16:30:40,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474616873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:40,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:40,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 16:30:40,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491509763] [2021-12-17 16:30:40,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:40,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:30:40,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:30:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:30:40,896 INFO L87 Difference]: Start difference. First operand 246 states and 300 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:41,366 INFO L93 Difference]: Finished difference Result 600 states and 765 transitions. [2021-12-17 16:30:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:30:41,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:30:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:41,368 INFO L225 Difference]: With dead ends: 600 [2021-12-17 16:30:41,368 INFO L226 Difference]: Without dead ends: 483 [2021-12-17 16:30:41,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-17 16:30:41,369 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1470 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:41,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 1260 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-17 16:30:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 183. [2021-12-17 16:30:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 176 states have (on average 1.2670454545454546) internal successors, (223), 182 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 223 transitions. [2021-12-17 16:30:41,383 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 223 transitions. Word has length 66 [2021-12-17 16:30:41,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:41,383 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 223 transitions. [2021-12-17 16:30:41,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:41,383 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 223 transitions. [2021-12-17 16:30:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:30:41,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:41,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:41,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:30:41,384 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1787778406, now seen corresponding path program 1 times [2021-12-17 16:30:41,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:41,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991429062] [2021-12-17 16:30:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:41,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:41,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991429062] [2021-12-17 16:30:41,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991429062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:41,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:41,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-12-17 16:30:41,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497148013] [2021-12-17 16:30:41,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:41,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-17 16:30:41,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-17 16:30:41,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-12-17 16:30:41,941 INFO L87 Difference]: Start difference. First operand 183 states and 223 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:43,843 INFO L93 Difference]: Finished difference Result 683 states and 876 transitions. [2021-12-17 16:30:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-17 16:30:43,843 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:30:43,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:43,852 INFO L225 Difference]: With dead ends: 683 [2021-12-17 16:30:43,852 INFO L226 Difference]: Without dead ends: 625 [2021-12-17 16:30:43,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=315, Invalid=1577, Unknown=0, NotChecked=0, Total=1892 [2021-12-17 16:30:43,857 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 1888 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 5821 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:43,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1888 Valid, 5821 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2914 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:30:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-12-17 16:30:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 198. [2021-12-17 16:30:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.2774869109947644) internal successors, (244), 197 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 244 transitions. [2021-12-17 16:30:43,917 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 244 transitions. Word has length 66 [2021-12-17 16:30:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:43,917 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 244 transitions. [2021-12-17 16:30:43,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 244 transitions. [2021-12-17 16:30:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:30:43,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:43,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:43,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:30:43,920 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1127331716, now seen corresponding path program 1 times [2021-12-17 16:30:43,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:43,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146281543] [2021-12-17 16:30:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:43,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:44,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:44,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146281543] [2021-12-17 16:30:44,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146281543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:44,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:44,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:30:44,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726921420] [2021-12-17 16:30:44,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:44,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:30:44,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:44,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:30:44,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:30:44,174 INFO L87 Difference]: Start difference. First operand 198 states and 244 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:44,780 INFO L93 Difference]: Finished difference Result 524 states and 690 transitions. [2021-12-17 16:30:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:30:44,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:30:44,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:44,781 INFO L225 Difference]: With dead ends: 524 [2021-12-17 16:30:44,781 INFO L226 Difference]: Without dead ends: 437 [2021-12-17 16:30:44,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:30:44,785 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 1211 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:44,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 2588 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:44,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-12-17 16:30:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 165. [2021-12-17 16:30:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 161 states have (on average 1.279503105590062) internal successors, (206), 164 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 206 transitions. [2021-12-17 16:30:44,801 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 206 transitions. Word has length 66 [2021-12-17 16:30:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:44,801 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 206 transitions. [2021-12-17 16:30:44,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 206 transitions. [2021-12-17 16:30:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:30:44,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:44,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:44,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:30:44,802 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1673815221, now seen corresponding path program 1 times [2021-12-17 16:30:44,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:44,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572309819] [2021-12-17 16:30:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:44,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:45,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:45,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572309819] [2021-12-17 16:30:45,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572309819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:45,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:45,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-17 16:30:45,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266918688] [2021-12-17 16:30:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:45,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 16:30:45,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:45,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 16:30:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:30:45,091 INFO L87 Difference]: Start difference. First operand 165 states and 206 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:46,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:46,107 INFO L93 Difference]: Finished difference Result 575 states and 787 transitions. [2021-12-17 16:30:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 16:30:46,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:30:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:46,109 INFO L225 Difference]: With dead ends: 575 [2021-12-17 16:30:46,109 INFO L226 Difference]: Without dead ends: 501 [2021-12-17 16:30:46,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:30:46,110 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 1439 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:46,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1439 Valid, 3115 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:30:46,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-12-17 16:30:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 156. [2021-12-17 16:30:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.269736842105263) internal successors, (193), 155 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 193 transitions. [2021-12-17 16:30:46,127 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 193 transitions. Word has length 67 [2021-12-17 16:30:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:46,128 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 193 transitions. [2021-12-17 16:30:46,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 193 transitions. [2021-12-17 16:30:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:30:46,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:46,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:46,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:30:46,129 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:46,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash -710008920, now seen corresponding path program 1 times [2021-12-17 16:30:46,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:46,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353737942] [2021-12-17 16:30:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:46,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:46,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:46,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353737942] [2021-12-17 16:30:46,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353737942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:46,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:46,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:30:46,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431705051] [2021-12-17 16:30:46,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:46,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:30:46,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:30:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:46,208 INFO L87 Difference]: Start difference. First operand 156 states and 193 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:46,473 INFO L93 Difference]: Finished difference Result 303 states and 396 transitions. [2021-12-17 16:30:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:30:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:30:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:46,474 INFO L225 Difference]: With dead ends: 303 [2021-12-17 16:30:46,474 INFO L226 Difference]: Without dead ends: 231 [2021-12-17 16:30:46,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-12-17 16:30:46,476 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 836 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:46,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 499 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:30:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-17 16:30:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 156. [2021-12-17 16:30:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.256578947368421) internal successors, (191), 155 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2021-12-17 16:30:46,492 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 67 [2021-12-17 16:30:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:46,492 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2021-12-17 16:30:46,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2021-12-17 16:30:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:30:46,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:46,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:46,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:30:46,493 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1599979240, now seen corresponding path program 1 times [2021-12-17 16:30:46,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:46,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918186167] [2021-12-17 16:30:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:46,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:46,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:46,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918186167] [2021-12-17 16:30:46,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918186167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:46,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:46,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 16:30:46,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27776400] [2021-12-17 16:30:46,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:46,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 16:30:46,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 16:30:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-17 16:30:46,780 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:47,654 INFO L93 Difference]: Finished difference Result 399 states and 518 transitions. [2021-12-17 16:30:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:30:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:30:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:47,655 INFO L225 Difference]: With dead ends: 399 [2021-12-17 16:30:47,656 INFO L226 Difference]: Without dead ends: 341 [2021-12-17 16:30:47,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:30:47,657 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1450 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:47,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 1608 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-17 16:30:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 172. [2021-12-17 16:30:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.2619047619047619) internal successors, (212), 171 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-12-17 16:30:47,677 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 67 [2021-12-17 16:30:47,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:47,677 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-12-17 16:30:47,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:47,678 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-12-17 16:30:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:30:47,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:47,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:47,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:30:47,679 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1932879495, now seen corresponding path program 1 times [2021-12-17 16:30:47,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:47,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776606363] [2021-12-17 16:30:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:47,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:47,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:47,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776606363] [2021-12-17 16:30:47,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776606363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:47,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:47,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:30:47,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452435866] [2021-12-17 16:30:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:47,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:30:47,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:30:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:30:47,899 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:48,330 INFO L93 Difference]: Finished difference Result 445 states and 595 transitions. [2021-12-17 16:30:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:30:48,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:30:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:48,332 INFO L225 Difference]: With dead ends: 445 [2021-12-17 16:30:48,332 INFO L226 Difference]: Without dead ends: 371 [2021-12-17 16:30:48,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:30:48,333 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 953 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:48,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 2163 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-17 16:30:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 134. [2021-12-17 16:30:48,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.25) internal successors, (165), 133 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 165 transitions. [2021-12-17 16:30:48,352 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 165 transitions. Word has length 68 [2021-12-17 16:30:48,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:48,352 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 165 transitions. [2021-12-17 16:30:48,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:48,353 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 165 transitions. [2021-12-17 16:30:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:30:48,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:48,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:48,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:30:48,353 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1308874992, now seen corresponding path program 1 times [2021-12-17 16:30:48,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:48,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052323260] [2021-12-17 16:30:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:48,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:48,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:48,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052323260] [2021-12-17 16:30:48,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052323260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:48,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:48,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-17 16:30:48,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635910410] [2021-12-17 16:30:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:48,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-17 16:30:48,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-17 16:30:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:30:48,936 INFO L87 Difference]: Start difference. First operand 134 states and 165 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:51,372 INFO L93 Difference]: Finished difference Result 669 states and 917 transitions. [2021-12-17 16:30:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 16:30:51,373 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-17 16:30:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:51,374 INFO L225 Difference]: With dead ends: 669 [2021-12-17 16:30:51,374 INFO L226 Difference]: Without dead ends: 663 [2021-12-17 16:30:51,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=284, Invalid=1522, Unknown=0, NotChecked=0, Total=1806 [2021-12-17 16:30:51,375 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1552 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 7003 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:51,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 7003 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:30:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-12-17 16:30:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 150. [2021-12-17 16:30:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.25) internal successors, (185), 149 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 185 transitions. [2021-12-17 16:30:51,399 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 185 transitions. Word has length 69 [2021-12-17 16:30:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:51,399 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 185 transitions. [2021-12-17 16:30:51,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 185 transitions. [2021-12-17 16:30:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:30:51,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:51,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:51,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:30:51,400 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash -933011809, now seen corresponding path program 1 times [2021-12-17 16:30:51,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:51,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539054327] [2021-12-17 16:30:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:51,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:52,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:52,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539054327] [2021-12-17 16:30:52,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539054327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:52,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:52,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-17 16:30:52,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65537156] [2021-12-17 16:30:52,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:52,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-17 16:30:52,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-17 16:30:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:30:52,083 INFO L87 Difference]: Start difference. First operand 150 states and 185 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:55,193 INFO L93 Difference]: Finished difference Result 794 states and 1100 transitions. [2021-12-17 16:30:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 16:30:55,193 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:30:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:55,195 INFO L225 Difference]: With dead ends: 794 [2021-12-17 16:30:55,196 INFO L226 Difference]: Without dead ends: 788 [2021-12-17 16:30:55,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=301, Invalid=1421, Unknown=0, NotChecked=0, Total=1722 [2021-12-17 16:30:55,196 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1394 mSDsluCounter, 7805 mSDsCounter, 0 mSdLazyCounter, 3876 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 8347 SdHoareTripleChecker+Invalid, 3914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:55,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 8347 Invalid, 3914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3876 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 16:30:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-12-17 16:30:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 145. [2021-12-17 16:30:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 144 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 179 transitions. [2021-12-17 16:30:55,236 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 179 transitions. Word has length 70 [2021-12-17 16:30:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:55,236 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 179 transitions. [2021-12-17 16:30:55,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 179 transitions. [2021-12-17 16:30:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:30:55,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:55,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:55,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:30:55,237 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:55,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:55,238 INFO L85 PathProgramCache]: Analyzing trace with hash -507700554, now seen corresponding path program 1 times [2021-12-17 16:30:55,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:55,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379302974] [2021-12-17 16:30:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:55,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:55,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:55,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379302974] [2021-12-17 16:30:55,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379302974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:55,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:55,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:30:55,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083354736] [2021-12-17 16:30:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:55,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:30:55,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:30:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:30:55,490 INFO L87 Difference]: Start difference. First operand 145 states and 179 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:56,197 INFO L93 Difference]: Finished difference Result 562 states and 781 transitions. [2021-12-17 16:30:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:30:56,197 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:30:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:56,199 INFO L225 Difference]: With dead ends: 562 [2021-12-17 16:30:56,199 INFO L226 Difference]: Without dead ends: 556 [2021-12-17 16:30:56,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:30:56,200 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1009 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:56,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 2730 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-17 16:30:56,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 128. [2021-12-17 16:30:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 127 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 159 transitions. [2021-12-17 16:30:56,222 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 159 transitions. Word has length 70 [2021-12-17 16:30:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:56,222 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 159 transitions. [2021-12-17 16:30:56,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 159 transitions. [2021-12-17 16:30:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-17 16:30:56,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:56,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:56,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:30:56,223 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:56,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1208516883, now seen corresponding path program 1 times [2021-12-17 16:30:56,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:56,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898904459] [2021-12-17 16:30:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:56,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:56,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:56,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898904459] [2021-12-17 16:30:56,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898904459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:56,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:56,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:56,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627658451] [2021-12-17 16:30:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:56,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:56,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:56,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:56,284 INFO L87 Difference]: Start difference. First operand 128 states and 159 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:56,477 INFO L93 Difference]: Finished difference Result 560 states and 799 transitions. [2021-12-17 16:30:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:30:56,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-17 16:30:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:56,479 INFO L225 Difference]: With dead ends: 560 [2021-12-17 16:30:56,480 INFO L226 Difference]: Without dead ends: 506 [2021-12-17 16:30:56,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:30:56,481 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 895 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:56,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 950 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-17 16:30:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 180. [2021-12-17 16:30:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.318435754189944) internal successors, (236), 179 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 236 transitions. [2021-12-17 16:30:56,520 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 236 transitions. Word has length 92 [2021-12-17 16:30:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:56,520 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 236 transitions. [2021-12-17 16:30:56,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 236 transitions. [2021-12-17 16:30:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-17 16:30:56,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:56,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:56,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:30:56,524 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1324206254, now seen corresponding path program 1 times [2021-12-17 16:30:56,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:56,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930414452] [2021-12-17 16:30:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:56,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:56,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930414452] [2021-12-17 16:30:56,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930414452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:56,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:56,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:56,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471232094] [2021-12-17 16:30:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:56,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:56,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:56,575 INFO L87 Difference]: Start difference. First operand 180 states and 236 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:56,764 INFO L93 Difference]: Finished difference Result 658 states and 942 transitions. [2021-12-17 16:30:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:56,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-17 16:30:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:56,766 INFO L225 Difference]: With dead ends: 658 [2021-12-17 16:30:56,766 INFO L226 Difference]: Without dead ends: 552 [2021-12-17 16:30:56,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:56,767 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 648 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:56,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 662 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-12-17 16:30:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 284. [2021-12-17 16:30:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3816254416961131) internal successors, (391), 283 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2021-12-17 16:30:56,844 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 94 [2021-12-17 16:30:56,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:56,845 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2021-12-17 16:30:56,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2021-12-17 16:30:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-17 16:30:56,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:56,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:56,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 16:30:56,847 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1309824789, now seen corresponding path program 1 times [2021-12-17 16:30:56,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:56,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326882827] [2021-12-17 16:30:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:56,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:56,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:56,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326882827] [2021-12-17 16:30:56,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326882827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:56,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:56,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:56,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106202133] [2021-12-17 16:30:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:56,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:56,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:56,928 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:57,063 INFO L93 Difference]: Finished difference Result 496 states and 704 transitions. [2021-12-17 16:30:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:57,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-17 16:30:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:57,065 INFO L225 Difference]: With dead ends: 496 [2021-12-17 16:30:57,065 INFO L226 Difference]: Without dead ends: 286 [2021-12-17 16:30:57,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:30:57,066 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 483 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:57,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 377 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-17 16:30:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2021-12-17 16:30:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3745583038869258) internal successors, (389), 283 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 389 transitions. [2021-12-17 16:30:57,134 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 389 transitions. Word has length 94 [2021-12-17 16:30:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:57,134 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 389 transitions. [2021-12-17 16:30:57,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 389 transitions. [2021-12-17 16:30:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-17 16:30:57,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:57,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:57,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 16:30:57,136 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 570084468, now seen corresponding path program 1 times [2021-12-17 16:30:57,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718958531] [2021-12-17 16:30:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:57,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:57,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:57,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718958531] [2021-12-17 16:30:57,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718958531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:57,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:57,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:57,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476518564] [2021-12-17 16:30:57,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:57,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:57,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:57,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:57,162 INFO L87 Difference]: Start difference. First operand 284 states and 389 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:57,310 INFO L93 Difference]: Finished difference Result 678 states and 965 transitions. [2021-12-17 16:30:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-17 16:30:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:57,312 INFO L225 Difference]: With dead ends: 678 [2021-12-17 16:30:57,312 INFO L226 Difference]: Without dead ends: 468 [2021-12-17 16:30:57,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:57,313 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 89 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:57,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 251 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-12-17 16:30:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2021-12-17 16:30:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.3882863340563991) internal successors, (640), 461 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 640 transitions. [2021-12-17 16:30:57,445 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 640 transitions. Word has length 94 [2021-12-17 16:30:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:57,446 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 640 transitions. [2021-12-17 16:30:57,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 640 transitions. [2021-12-17 16:30:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-17 16:30:57,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:57,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:57,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 16:30:57,447 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -337360546, now seen corresponding path program 1 times [2021-12-17 16:30:57,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:57,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396866012] [2021-12-17 16:30:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:57,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:57,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:57,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396866012] [2021-12-17 16:30:57,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396866012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:57,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:57,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:57,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228804059] [2021-12-17 16:30:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:57,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:57,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:57,488 INFO L87 Difference]: Start difference. First operand 462 states and 640 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:57,905 INFO L93 Difference]: Finished difference Result 1341 states and 1908 transitions. [2021-12-17 16:30:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:57,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-17 16:30:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:57,908 INFO L225 Difference]: With dead ends: 1341 [2021-12-17 16:30:57,908 INFO L226 Difference]: Without dead ends: 1146 [2021-12-17 16:30:57,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:57,909 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 613 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:57,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 698 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-12-17 16:30:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 752. [2021-12-17 16:30:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.4087882822902795) internal successors, (1058), 751 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1058 transitions. [2021-12-17 16:30:58,146 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1058 transitions. Word has length 94 [2021-12-17 16:30:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:58,146 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1058 transitions. [2021-12-17 16:30:58,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1058 transitions. [2021-12-17 16:30:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-17 16:30:58,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:58,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:58,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 16:30:58,148 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1456780136, now seen corresponding path program 1 times [2021-12-17 16:30:58,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:58,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533297763] [2021-12-17 16:30:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:58,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:58,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:58,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533297763] [2021-12-17 16:30:58,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533297763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:58,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:58,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:30:58,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677608149] [2021-12-17 16:30:58,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:58,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:30:58,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:58,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:30:58,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:30:58,189 INFO L87 Difference]: Start difference. First operand 752 states and 1058 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:58,691 INFO L93 Difference]: Finished difference Result 1534 states and 2187 transitions. [2021-12-17 16:30:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:30:58,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-17 16:30:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:58,694 INFO L225 Difference]: With dead ends: 1534 [2021-12-17 16:30:58,694 INFO L226 Difference]: Without dead ends: 1339 [2021-12-17 16:30:58,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:30:58,696 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 584 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:58,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 734 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2021-12-17 16:30:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 945. [2021-12-17 16:30:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 1.416313559322034) internal successors, (1337), 944 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1337 transitions. [2021-12-17 16:30:58,999 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1337 transitions. Word has length 94 [2021-12-17 16:30:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:59,000 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1337 transitions. [2021-12-17 16:30:59,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1337 transitions. [2021-12-17 16:30:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:30:59,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:59,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:59,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 16:30:59,001 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:30:59,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:59,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1890695249, now seen corresponding path program 1 times [2021-12-17 16:30:59,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:59,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228006287] [2021-12-17 16:30:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:59,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:59,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:59,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228006287] [2021-12-17 16:30:59,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228006287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:59,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:59,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:59,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394830236] [2021-12-17 16:30:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:59,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:59,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:59,030 INFO L87 Difference]: Start difference. First operand 945 states and 1337 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:59,689 INFO L93 Difference]: Finished difference Result 2615 states and 3727 transitions. [2021-12-17 16:30:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:30:59,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:30:59,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:59,694 INFO L225 Difference]: With dead ends: 2615 [2021-12-17 16:30:59,694 INFO L226 Difference]: Without dead ends: 1744 [2021-12-17 16:30:59,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:59,723 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 72 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:59,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 333 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:30:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-12-17 16:31:00,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1670. [2021-12-17 16:31:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1669 states have (on average 1.4140203714799282) internal successors, (2360), 1669 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2360 transitions. [2021-12-17 16:31:00,323 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2360 transitions. Word has length 95 [2021-12-17 16:31:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:31:00,323 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 2360 transitions. [2021-12-17 16:31:00,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2360 transitions. [2021-12-17 16:31:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:31:00,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:31:00,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:31:00,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 16:31:00,324 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:31:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:31:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1608306199, now seen corresponding path program 1 times [2021-12-17 16:31:00,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:31:00,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807595141] [2021-12-17 16:31:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:00,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:31:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:00,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:31:00,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807595141] [2021-12-17 16:31:00,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807595141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:31:00,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:31:00,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:31:00,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450505339] [2021-12-17 16:31:00,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:31:00,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:31:00,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:31:00,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:31:00,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:00,351 INFO L87 Difference]: Start difference. First operand 1670 states and 2360 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:31:01,384 INFO L93 Difference]: Finished difference Result 4718 states and 6670 transitions. [2021-12-17 16:31:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:31:01,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:31:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:31:01,406 INFO L225 Difference]: With dead ends: 4718 [2021-12-17 16:31:01,419 INFO L226 Difference]: Without dead ends: 3122 [2021-12-17 16:31:01,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:01,424 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 65 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:31:01,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 333 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:31:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2021-12-17 16:31:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2976. [2021-12-17 16:31:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 1.4023529411764706) internal successors, (4172), 2975 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:02,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4172 transitions. [2021-12-17 16:31:02,441 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4172 transitions. Word has length 96 [2021-12-17 16:31:02,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:31:02,442 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 4172 transitions. [2021-12-17 16:31:02,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4172 transitions. [2021-12-17 16:31:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:31:02,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:31:02,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:31:02,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 16:31:02,444 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:31:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:31:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash -916899152, now seen corresponding path program 1 times [2021-12-17 16:31:02,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:31:02,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579621161] [2021-12-17 16:31:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:02,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:31:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:02,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:31:02,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579621161] [2021-12-17 16:31:02,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579621161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:31:02,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:31:02,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:31:02,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268500975] [2021-12-17 16:31:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:31:02,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:31:02,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:31:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:31:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:02,497 INFO L87 Difference]: Start difference. First operand 2976 states and 4172 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:31:04,434 INFO L93 Difference]: Finished difference Result 8492 states and 11854 transitions. [2021-12-17 16:31:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:31:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:31:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:31:04,447 INFO L225 Difference]: With dead ends: 8492 [2021-12-17 16:31:04,447 INFO L226 Difference]: Without dead ends: 5590 [2021-12-17 16:31:04,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:04,449 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 55 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:31:04,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 333 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:31:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2021-12-17 16:31:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5300. [2021-12-17 16:31:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 1.382902434421589) internal successors, (7328), 5299 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 7328 transitions. [2021-12-17 16:31:06,268 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 7328 transitions. Word has length 97 [2021-12-17 16:31:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:31:06,268 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 7328 transitions. [2021-12-17 16:31:06,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 7328 transitions. [2021-12-17 16:31:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:31:06,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:31:06,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:31:06,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 16:31:06,271 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:31:06,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:31:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2063595932, now seen corresponding path program 1 times [2021-12-17 16:31:06,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:31:06,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106821786] [2021-12-17 16:31:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:06,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:31:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:06,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:31:06,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106821786] [2021-12-17 16:31:06,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106821786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:31:06,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:31:06,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:31:06,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072972959] [2021-12-17 16:31:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:31:06,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:31:06,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:31:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:31:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:31:06,343 INFO L87 Difference]: Start difference. First operand 5300 states and 7328 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:31:09,717 INFO L93 Difference]: Finished difference Result 9356 states and 12848 transitions. [2021-12-17 16:31:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:31:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:31:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:31:09,737 INFO L225 Difference]: With dead ends: 9356 [2021-12-17 16:31:09,737 INFO L226 Difference]: Without dead ends: 9354 [2021-12-17 16:31:09,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:31:09,738 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 257 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:31:09,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 840 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:31:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9354 states. [2021-12-17 16:31:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9354 to 5492. [2021-12-17 16:31:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5492 states, 5491 states have (on average 1.3622291021671826) internal successors, (7480), 5491 states have internal predecessors, (7480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 7480 transitions. [2021-12-17 16:31:11,732 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 7480 transitions. Word has length 98 [2021-12-17 16:31:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:31:11,732 INFO L470 AbstractCegarLoop]: Abstraction has 5492 states and 7480 transitions. [2021-12-17 16:31:11,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 7480 transitions. [2021-12-17 16:31:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:31:11,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:31:11,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:31:11,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 16:31:11,733 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:31:11,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:31:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash -777753176, now seen corresponding path program 1 times [2021-12-17 16:31:11,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:31:11,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396395173] [2021-12-17 16:31:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:11,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:31:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:11,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:31:11,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396395173] [2021-12-17 16:31:11,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396395173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:31:11,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:31:11,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:31:11,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247008891] [2021-12-17 16:31:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:31:11,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:31:11,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:31:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:31:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:31:11,774 INFO L87 Difference]: Start difference. First operand 5492 states and 7480 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:31:15,001 INFO L93 Difference]: Finished difference Result 10334 states and 14141 transitions. [2021-12-17 16:31:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:31:15,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:31:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:31:15,015 INFO L225 Difference]: With dead ends: 10334 [2021-12-17 16:31:15,015 INFO L226 Difference]: Without dead ends: 9124 [2021-12-17 16:31:15,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:31:15,018 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 643 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:31:15,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 740 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:31:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2021-12-17 16:31:17,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 6700. [2021-12-17 16:31:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.3625914315569487) internal successors, (9128), 6699 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9128 transitions. [2021-12-17 16:31:17,352 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9128 transitions. Word has length 98 [2021-12-17 16:31:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:31:17,352 INFO L470 AbstractCegarLoop]: Abstraction has 6700 states and 9128 transitions. [2021-12-17 16:31:17,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9128 transitions. [2021-12-17 16:31:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:31:17,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:31:17,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:31:17,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 16:31:17,353 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:31:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:31:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1173003609, now seen corresponding path program 1 times [2021-12-17 16:31:17,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:31:17,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794658200] [2021-12-17 16:31:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:17,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:31:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:17,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:31:17,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794658200] [2021-12-17 16:31:17,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794658200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:31:17,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:31:17,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:31:17,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831462461] [2021-12-17 16:31:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:31:17,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:31:17,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:31:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:31:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:17,395 INFO L87 Difference]: Start difference. First operand 6700 states and 9128 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:31:21,318 INFO L93 Difference]: Finished difference Result 17400 states and 23654 transitions. [2021-12-17 16:31:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:31:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:31:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:31:21,332 INFO L225 Difference]: With dead ends: 17400 [2021-12-17 16:31:21,332 INFO L226 Difference]: Without dead ends: 10774 [2021-12-17 16:31:21,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:21,338 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 76 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:31:21,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 336 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:31:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2021-12-17 16:31:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10068. [2021-12-17 16:31:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10068 states, 10067 states have (on average 1.3457832522101918) internal successors, (13548), 10067 states have internal predecessors, (13548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 13548 transitions. [2021-12-17 16:31:24,926 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 13548 transitions. Word has length 99 [2021-12-17 16:31:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:31:24,926 INFO L470 AbstractCegarLoop]: Abstraction has 10068 states and 13548 transitions. [2021-12-17 16:31:24,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 13548 transitions. [2021-12-17 16:31:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-17 16:31:24,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:31:24,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:31:24,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 16:31:24,929 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:31:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:31:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1824588018, now seen corresponding path program 1 times [2021-12-17 16:31:24,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:31:24,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800295083] [2021-12-17 16:31:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:24,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:31:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:24,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:31:24,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800295083] [2021-12-17 16:31:24,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800295083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:31:24,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:31:24,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:31:24,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202910445] [2021-12-17 16:31:24,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:31:24,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:31:24,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:31:24,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:31:24,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:24,969 INFO L87 Difference]: Start difference. First operand 10068 states and 13548 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:31:28,492 INFO L93 Difference]: Finished difference Result 20064 states and 27018 transitions. [2021-12-17 16:31:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:31:28,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-12-17 16:31:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:31:28,508 INFO L225 Difference]: With dead ends: 20064 [2021-12-17 16:31:28,508 INFO L226 Difference]: Without dead ends: 10070 [2021-12-17 16:31:28,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:31:28,520 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 69 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:31:28,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 309 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:31:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10070 states. [2021-12-17 16:31:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10070 to 10068. [2021-12-17 16:31:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10068 states, 10067 states have (on average 1.3283003874043906) internal successors, (13372), 10067 states have internal predecessors, (13372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 13372 transitions. [2021-12-17 16:31:32,269 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 13372 transitions. Word has length 125 [2021-12-17 16:31:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:31:32,269 INFO L470 AbstractCegarLoop]: Abstraction has 10068 states and 13372 transitions. [2021-12-17 16:31:32,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:31:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 13372 transitions. [2021-12-17 16:31:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-17 16:31:32,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:31:32,271 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:31:32,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 16:31:32,271 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:31:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:31:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -277387224, now seen corresponding path program 1 times [2021-12-17 16:31:32,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:31:32,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316105565] [2021-12-17 16:31:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:32,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:31:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:32,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:31:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316105565] [2021-12-17 16:31:32,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316105565] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:31:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144413849] [2021-12-17 16:31:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:31:32,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:31:32,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:31:32,430 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) [2021-12-17 16:31:32,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 16:31:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:31:32,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 16:31:32,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:31:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:33,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:31:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:31:34,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144413849] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:31:34,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:31:34,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2021-12-17 16:31:34,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705645734] [2021-12-17 16:31:34,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:31:34,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-17 16:31:34,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:31:34,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-17 16:31:34,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-12-17 16:31:34,482 INFO L87 Difference]: Start difference. First operand 10068 states and 13372 transitions. Second operand has 29 states, 29 states have (on average 11.517241379310345) internal successors, (334), 28 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:34:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:34:40,122 INFO L93 Difference]: Finished difference Result 303008 states and 394833 transitions. [2021-12-17 16:34:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 714 states. [2021-12-17 16:34:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.517241379310345) internal successors, (334), 28 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-12-17 16:34:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:34:40,915 INFO L225 Difference]: With dead ends: 303008 [2021-12-17 16:34:40,915 INFO L226 Difference]: Without dead ends: 293014 [2021-12-17 16:34:41,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 739 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254001 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=51762, Invalid=496578, Unknown=0, NotChecked=0, Total=548340 [2021-12-17 16:34:41,046 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 11844 mSDsluCounter, 6096 mSDsCounter, 0 mSdLazyCounter, 8269 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11844 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 8905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 8269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:34:41,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11844 Valid, 6532 Invalid, 8905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 8269 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-17 16:34:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293014 states. [2021-12-17 16:35:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293014 to 50872. [2021-12-17 16:35:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50872 states, 50871 states have (on average 1.31857050185764) internal successors, (67077), 50871 states have internal predecessors, (67077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:35:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50872 states to 50872 states and 67077 transitions. [2021-12-17 16:35:05,440 INFO L78 Accepts]: Start accepts. Automaton has 50872 states and 67077 transitions. Word has length 125 [2021-12-17 16:35:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:35:05,441 INFO L470 AbstractCegarLoop]: Abstraction has 50872 states and 67077 transitions. [2021-12-17 16:35:05,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.517241379310345) internal successors, (334), 28 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:35:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 50872 states and 67077 transitions. [2021-12-17 16:35:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-17 16:35:05,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:35:05,448 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:35:05,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 16:35:05,664 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,SelfDestructingSolverStorable37 [2021-12-17 16:35:05,664 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:35:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:35:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1252162466, now seen corresponding path program 1 times [2021-12-17 16:35:05,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:35:05,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387362530] [2021-12-17 16:35:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:35:05,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:35:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:35:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:35:05,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:35:05,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387362530] [2021-12-17 16:35:05,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387362530] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:35:05,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617482317] [2021-12-17 16:35:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:35:05,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:35:05,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:35:05,817 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) [2021-12-17 16:35:05,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 16:35:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:35:05,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-17 16:35:05,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:35:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:35:06,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:35:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:35:07,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617482317] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:35:07,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:35:07,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2021-12-17 16:35:07,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453750540] [2021-12-17 16:35:07,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:35:07,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-17 16:35:07,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:35:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-17 16:35:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:35:07,561 INFO L87 Difference]: Start difference. First operand 50872 states and 67077 transitions. Second operand has 27 states, 27 states have (on average 12.407407407407407) internal successors, (335), 27 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:39:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:39:35,200 INFO L93 Difference]: Finished difference Result 530484 states and 690014 transitions. [2021-12-17 16:39:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 487 states. [2021-12-17 16:39:35,201 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.407407407407407) internal successors, (335), 27 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-12-17 16:39:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:39:36,476 INFO L225 Difference]: With dead ends: 530484 [2021-12-17 16:39:36,477 INFO L226 Difference]: Without dead ends: 479749 [2021-12-17 16:39:36,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121938 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=29717, Invalid=231915, Unknown=0, NotChecked=0, Total=261632 [2021-12-17 16:39:36,735 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 11774 mSDsluCounter, 6378 mSDsCounter, 0 mSdLazyCounter, 5694 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11774 SdHoareTripleChecker+Valid, 6803 SdHoareTripleChecker+Invalid, 6302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 5694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:39:36,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11774 Valid, 6803 Invalid, 6302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 5694 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 16:39:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479749 states.