./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-var-start-time.3.1.ufo.BOUNDED-6.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 0ed6e4196d49d75b29a7ddd297e9986c08c6bd65f18221f72f78571f381f483e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:41:06,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:41:06,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:41:06,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:41:06,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:41:06,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:41:06,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:41:06,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:41:06,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:41:06,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:41:06,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:41:06,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:41:06,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:41:06,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:41:06,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:41:06,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:41:06,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:41:06,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:41:06,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:41:06,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:41:06,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:41:06,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:41:06,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:41:06,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:41:06,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:41:06,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:41:06,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:41:06,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:41:06,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:41:06,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:41:06,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:41:06,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:41:06,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:41:06,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:41:06,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:41:06,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:41:06,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:41:06,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:41:06,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:41:06,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:41:06,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:41:06,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:41:06,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:41:06,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:41:06,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:41:06,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:41:06,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:41:06,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:41:06,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:41:06,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:41:06,355 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:41:06,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:41:06,355 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:41:06,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:41:06,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:41:06,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:41:06,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:41:06,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:41:06,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:41:06,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:41:06,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:41:06,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:41:06,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:41:06,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:41:06,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:41:06,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:41:06,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:41:06,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:41:06,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:41:06,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:41:06,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:41:06,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:41:06,360 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:41:06,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:41:06,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:41:06,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:41:06,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ed6e4196d49d75b29a7ddd297e9986c08c6bd65f18221f72f78571f381f483e [2021-12-21 13:41:06,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:41:06,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:41:06,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:41:06,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:41:06,575 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:41:06,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-21 13:41:06,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a8f84ec/273065e6f42848149fc2d9540e99b78a/FLAGe0e0b8742 [2021-12-21 13:41:07,007 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:41:07,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-21 13:41:07,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a8f84ec/273065e6f42848149fc2d9540e99b78a/FLAGe0e0b8742 [2021-12-21 13:41:07,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a8f84ec/273065e6f42848149fc2d9540e99b78a [2021-12-21 13:41:07,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:41:07,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:41:07,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:41:07,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:41:07,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:41:07,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:07" (1/1) ... [2021-12-21 13:41:07,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bfe735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:07, skipping insertion in model container [2021-12-21 13:41:07,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:07" (1/1) ... [2021-12-21 13:41:07,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:41:07,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:41:07,614 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8637,8650] [2021-12-21 13:41:07,640 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15862,15875] [2021-12-21 13:41:07,648 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18059,18072] [2021-12-21 13:41:07,652 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19083,19096] [2021-12-21 13:41:07,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:41:07,800 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:41:07,849 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8637,8650] [2021-12-21 13:41:07,890 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15862,15875] [2021-12-21 13:41:07,903 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18059,18072] [2021-12-21 13:41:07,914 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19083,19096] [2021-12-21 13:41:07,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:41:08,003 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:41:08,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08 WrapperNode [2021-12-21 13:41:08,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:41:08,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:41:08,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:41:08,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:41:08,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,088 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2592 [2021-12-21 13:41:08,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:41:08,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:41:08,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:41:08,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:41:08,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:41:08,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:41:08,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:41:08,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:41:08,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (1/1) ... [2021-12-21 13:41:08,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:41:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:41:08,243 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) [2021-12-21 13:41:08,265 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 [2021-12-21 13:41:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:41:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:41:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:41:08,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:41:08,456 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:41:08,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:41:09,316 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:41:09,324 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:41:09,325 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 13:41:09,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:09 BoogieIcfgContainer [2021-12-21 13:41:09,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:41:09,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:41:09,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:41:09,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:41:09,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:41:07" (1/3) ... [2021-12-21 13:41:09,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae8fe6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:09, skipping insertion in model container [2021-12-21 13:41:09,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:08" (2/3) ... [2021-12-21 13:41:09,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae8fe6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:09, skipping insertion in model container [2021-12-21 13:41:09,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:09" (3/3) ... [2021-12-21 13:41:09,332 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-21 13:41:09,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:41:09,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-21 13:41:09,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:41:09,383 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 [2021-12-21 13:41:09,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-21 13:41:09,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 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) [2021-12-21 13:41:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 13:41:09,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:09,428 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] [2021-12-21 13:41:09,429 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1707798208, now seen corresponding path program 1 times [2021-12-21 13:41:09,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:09,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720151571] [2021-12-21 13:41:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:09,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:09,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720151571] [2021-12-21 13:41:09,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720151571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:09,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:09,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:09,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366926730] [2021-12-21 13:41:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:09,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:09,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:09,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:09,690 INFO L87 Difference]: Start difference. First operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 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 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-12-21 13:41:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:09,813 INFO L93 Difference]: Finished difference Result 725 states and 1271 transitions. [2021-12-21 13:41:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-12-21 13:41:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:09,837 INFO L225 Difference]: With dead ends: 725 [2021-12-21 13:41:09,838 INFO L226 Difference]: Without dead ends: 571 [2021-12-21 13:41:09,840 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 [2021-12-21 13:41:09,845 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 438 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:09,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1416 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:41:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-12-21 13:41:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2021-12-21 13:41:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 561 states have (on average 1.3440285204991087) internal successors, (754), 564 states have internal predecessors, (754), 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) [2021-12-21 13:41:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 754 transitions. [2021-12-21 13:41:09,931 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 754 transitions. Word has length 51 [2021-12-21 13:41:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:09,932 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 754 transitions. [2021-12-21 13:41:09,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-12-21 13:41:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 754 transitions. [2021-12-21 13:41:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 13:41:09,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:09,940 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] [2021-12-21 13:41:09,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:41:09,940 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:09,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1349444518, now seen corresponding path program 1 times [2021-12-21 13:41:09,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:09,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057685685] [2021-12-21 13:41:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:09,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:10,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:10,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057685685] [2021-12-21 13:41:10,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057685685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:10,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:10,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:10,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707993588] [2021-12-21 13:41:10,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:10,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:10,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:10,035 INFO L87 Difference]: Start difference. First operand 565 states and 754 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-12-21 13:41:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:10,112 INFO L93 Difference]: Finished difference Result 994 states and 1379 transitions. [2021-12-21 13:41:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:10,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-12-21 13:41:10,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:10,117 INFO L225 Difference]: With dead ends: 994 [2021-12-21 13:41:10,117 INFO L226 Difference]: Without dead ends: 781 [2021-12-21 13:41:10,120 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 [2021-12-21 13:41:10,121 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 314 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:10,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 1017 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-21 13:41:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 774. [2021-12-21 13:41:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 770 states have (on average 1.3714285714285714) internal successors, (1056), 773 states have internal predecessors, (1056), 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) [2021-12-21 13:41:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1056 transitions. [2021-12-21 13:41:10,157 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1056 transitions. Word has length 51 [2021-12-21 13:41:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:10,159 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1056 transitions. [2021-12-21 13:41:10,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-12-21 13:41:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1056 transitions. [2021-12-21 13:41:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 13:41:10,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:10,163 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] [2021-12-21 13:41:10,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:41:10,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:10,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1493728400, now seen corresponding path program 1 times [2021-12-21 13:41:10,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:10,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832178404] [2021-12-21 13:41:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:10,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:10,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:10,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832178404] [2021-12-21 13:41:10,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832178404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:10,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:10,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:41:10,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364870444] [2021-12-21 13:41:10,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:10,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:41:10,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:10,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:41:10,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:41:10,289 INFO L87 Difference]: Start difference. First operand 774 states and 1056 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-12-21 13:41:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:10,609 INFO L93 Difference]: Finished difference Result 1720 states and 2419 transitions. [2021-12-21 13:41:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:41:10,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-12-21 13:41:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:10,613 INFO L225 Difference]: With dead ends: 1720 [2021-12-21 13:41:10,613 INFO L226 Difference]: Without dead ends: 1063 [2021-12-21 13:41:10,615 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 [2021-12-21 13:41:10,618 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 1730 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:10,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 392 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:41:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-12-21 13:41:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1057. [2021-12-21 13:41:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1053 states have (on average 1.4074074074074074) internal successors, (1482), 1056 states have internal predecessors, (1482), 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) [2021-12-21 13:41:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1482 transitions. [2021-12-21 13:41:10,661 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1482 transitions. Word has length 51 [2021-12-21 13:41:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:10,663 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1482 transitions. [2021-12-21 13:41:10,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-12-21 13:41:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1482 transitions. [2021-12-21 13:41:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 13:41:10,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:10,665 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] [2021-12-21 13:41:10,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:41:10,666 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:10,667 INFO L85 PathProgramCache]: Analyzing trace with hash -358090099, now seen corresponding path program 1 times [2021-12-21 13:41:10,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:10,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396633308] [2021-12-21 13:41:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:10,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:10,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396633308] [2021-12-21 13:41:10,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396633308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:10,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:10,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:10,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69444591] [2021-12-21 13:41:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:10,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:10,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:10,744 INFO L87 Difference]: Start difference. First operand 1057 states and 1482 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-12-21 13:41:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:10,839 INFO L93 Difference]: Finished difference Result 2561 states and 3637 transitions. [2021-12-21 13:41:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:10,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-12-21 13:41:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:10,845 INFO L225 Difference]: With dead ends: 2561 [2021-12-21 13:41:10,845 INFO L226 Difference]: Without dead ends: 1730 [2021-12-21 13:41:10,846 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 [2021-12-21 13:41:10,847 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 364 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:10,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 933 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2021-12-21 13:41:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1716. [2021-12-21 13:41:10,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1712 states have (on average 1.3919392523364487) internal successors, (2383), 1715 states have internal predecessors, (2383), 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) [2021-12-21 13:41:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2383 transitions. [2021-12-21 13:41:10,933 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2383 transitions. Word has length 52 [2021-12-21 13:41:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:10,933 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 2383 transitions. [2021-12-21 13:41:10,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-12-21 13:41:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2383 transitions. [2021-12-21 13:41:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 13:41:10,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:10,935 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] [2021-12-21 13:41:10,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:41:10,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1296606516, now seen corresponding path program 1 times [2021-12-21 13:41:10,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:10,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653905908] [2021-12-21 13:41:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:10,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:10,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:10,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653905908] [2021-12-21 13:41:10,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653905908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:10,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:10,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:41:10,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723420051] [2021-12-21 13:41:10,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:10,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:41:10,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:41:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:41:10,979 INFO L87 Difference]: Start difference. First operand 1716 states and 2383 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-12-21 13:41:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:11,267 INFO L93 Difference]: Finished difference Result 3785 states and 5312 transitions. [2021-12-21 13:41:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:41:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-12-21 13:41:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:11,274 INFO L225 Difference]: With dead ends: 3785 [2021-12-21 13:41:11,274 INFO L226 Difference]: Without dead ends: 2241 [2021-12-21 13:41:11,276 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 [2021-12-21 13:41:11,277 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1531 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:11,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 367 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:41:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-12-21 13:41:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2227. [2021-12-21 13:41:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2223 states have (on average 1.3967611336032388) internal successors, (3105), 2226 states have internal predecessors, (3105), 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) [2021-12-21 13:41:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3105 transitions. [2021-12-21 13:41:11,388 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3105 transitions. Word has length 52 [2021-12-21 13:41:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:11,389 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3105 transitions. [2021-12-21 13:41:11,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-12-21 13:41:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3105 transitions. [2021-12-21 13:41:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-21 13:41:11,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:11,393 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] [2021-12-21 13:41:11,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:41:11,394 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:11,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash -482685133, now seen corresponding path program 1 times [2021-12-21 13:41:11,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:11,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042277958] [2021-12-21 13:41:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:11,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:11,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:11,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042277958] [2021-12-21 13:41:11,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042277958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:11,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:11,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:41:11,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176712301] [2021-12-21 13:41:11,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:11,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:41:11,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:11,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:41:11,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:41:11,456 INFO L87 Difference]: Start difference. First operand 2227 states and 3105 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-12-21 13:41:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:11,827 INFO L93 Difference]: Finished difference Result 5040 states and 7066 transitions. [2021-12-21 13:41:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:41:11,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2021-12-21 13:41:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:11,836 INFO L225 Difference]: With dead ends: 5040 [2021-12-21 13:41:11,836 INFO L226 Difference]: Without dead ends: 2985 [2021-12-21 13:41:11,839 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 [2021-12-21 13:41:11,842 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1376 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:11,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 335 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:41:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2021-12-21 13:41:11,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2966. [2021-12-21 13:41:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2962 states have (on average 1.3902768399729912) internal successors, (4118), 2965 states have internal predecessors, (4118), 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) [2021-12-21 13:41:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4118 transitions. [2021-12-21 13:41:11,976 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4118 transitions. Word has length 53 [2021-12-21 13:41:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:11,977 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 4118 transitions. [2021-12-21 13:41:11,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-12-21 13:41:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4118 transitions. [2021-12-21 13:41:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-21 13:41:11,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:11,979 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] [2021-12-21 13:41:11,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:41:11,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1630046103, now seen corresponding path program 1 times [2021-12-21 13:41:11,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:11,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748049803] [2021-12-21 13:41:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:11,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:12,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:12,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748049803] [2021-12-21 13:41:12,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748049803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:12,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:12,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:41:12,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824463469] [2021-12-21 13:41:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:12,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:41:12,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:41:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:41:12,058 INFO L87 Difference]: Start difference. First operand 2966 states and 4118 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-12-21 13:41:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:12,813 INFO L93 Difference]: Finished difference Result 9648 states and 13611 transitions. [2021-12-21 13:41:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:41:12,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2021-12-21 13:41:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:12,837 INFO L225 Difference]: With dead ends: 9648 [2021-12-21 13:41:12,837 INFO L226 Difference]: Without dead ends: 8327 [2021-12-21 13:41:12,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:41:12,841 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 2727 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2727 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:12,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2727 Valid, 599 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:41:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8327 states. [2021-12-21 13:41:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8327 to 2980. [2021-12-21 13:41:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2976 states have (on average 1.3897849462365592) internal successors, (4136), 2979 states have internal predecessors, (4136), 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) [2021-12-21 13:41:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4136 transitions. [2021-12-21 13:41:13,113 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4136 transitions. Word has length 54 [2021-12-21 13:41:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:13,113 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 4136 transitions. [2021-12-21 13:41:13,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-12-21 13:41:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4136 transitions. [2021-12-21 13:41:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-21 13:41:13,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:13,116 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] [2021-12-21 13:41:13,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:41:13,116 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1470909546, now seen corresponding path program 1 times [2021-12-21 13:41:13,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:13,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371883088] [2021-12-21 13:41:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:13,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:13,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:13,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371883088] [2021-12-21 13:41:13,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371883088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:13,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:13,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:41:13,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993451319] [2021-12-21 13:41:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:13,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:41:13,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:41:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:41:13,171 INFO L87 Difference]: Start difference. First operand 2980 states and 4136 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-12-21 13:41:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:14,320 INFO L93 Difference]: Finished difference Result 10678 states and 15139 transitions. [2021-12-21 13:41:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:41:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2021-12-21 13:41:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:14,347 INFO L225 Difference]: With dead ends: 10678 [2021-12-21 13:41:14,347 INFO L226 Difference]: Without dead ends: 9560 [2021-12-21 13:41:14,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:41:14,352 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 2037 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:14,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2037 Valid, 757 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:41:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2021-12-21 13:41:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 3002. [2021-12-21 13:41:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2998 states have (on average 1.3899266177451635) internal successors, (4167), 3001 states have internal predecessors, (4167), 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) [2021-12-21 13:41:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4167 transitions. [2021-12-21 13:41:14,676 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4167 transitions. Word has length 54 [2021-12-21 13:41:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:14,677 INFO L470 AbstractCegarLoop]: Abstraction has 3002 states and 4167 transitions. [2021-12-21 13:41:14,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-12-21 13:41:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4167 transitions. [2021-12-21 13:41:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-21 13:41:14,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:14,679 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] [2021-12-21 13:41:14,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:41:14,679 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:14,680 INFO L85 PathProgramCache]: Analyzing trace with hash 269556297, now seen corresponding path program 1 times [2021-12-21 13:41:14,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:14,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035053900] [2021-12-21 13:41:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:14,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:14,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:14,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035053900] [2021-12-21 13:41:14,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035053900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:14,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:14,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:41:14,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018420925] [2021-12-21 13:41:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:14,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:41:14,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:41:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:41:14,729 INFO L87 Difference]: Start difference. First operand 3002 states and 4167 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-12-21 13:41:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:16,194 INFO L93 Difference]: Finished difference Result 12683 states and 17895 transitions. [2021-12-21 13:41:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:41:16,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2021-12-21 13:41:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:16,213 INFO L225 Difference]: With dead ends: 12683 [2021-12-21 13:41:16,213 INFO L226 Difference]: Without dead ends: 11715 [2021-12-21 13:41:16,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:41:16,217 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 3203 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:16,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3203 Valid, 655 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:41:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11715 states. [2021-12-21 13:41:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11715 to 3036. [2021-12-21 13:41:16,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3036 states, 3032 states have (on average 1.3888522427440633) internal successors, (4211), 3035 states have internal predecessors, (4211), 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) [2021-12-21 13:41:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 4211 transitions. [2021-12-21 13:41:16,605 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 4211 transitions. Word has length 54 [2021-12-21 13:41:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:16,605 INFO L470 AbstractCegarLoop]: Abstraction has 3036 states and 4211 transitions. [2021-12-21 13:41:16,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-12-21 13:41:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 4211 transitions. [2021-12-21 13:41:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 13:41:16,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:16,607 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] [2021-12-21 13:41:16,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:41:16,608 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1866987345, now seen corresponding path program 1 times [2021-12-21 13:41:16,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:16,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211856417] [2021-12-21 13:41:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:16,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:16,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:16,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211856417] [2021-12-21 13:41:16,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211856417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:16,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:16,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:41:16,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745548718] [2021-12-21 13:41:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:16,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:41:16,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:41:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:41:16,691 INFO L87 Difference]: Start difference. First operand 3036 states and 4211 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-12-21 13:41:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:17,657 INFO L93 Difference]: Finished difference Result 7506 states and 10605 transitions. [2021-12-21 13:41:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:41:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-12-21 13:41:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:17,667 INFO L225 Difference]: With dead ends: 7506 [2021-12-21 13:41:17,667 INFO L226 Difference]: Without dead ends: 5545 [2021-12-21 13:41:17,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:41:17,671 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 2452 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:17,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 929 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:41:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2021-12-21 13:41:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 2949. [2021-12-21 13:41:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2945 states have (on average 1.3884550084889644) internal successors, (4089), 2948 states have internal predecessors, (4089), 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) [2021-12-21 13:41:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4089 transitions. [2021-12-21 13:41:17,974 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4089 transitions. Word has length 55 [2021-12-21 13:41:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:17,974 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 4089 transitions. [2021-12-21 13:41:17,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-12-21 13:41:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4089 transitions. [2021-12-21 13:41:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 13:41:17,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:17,977 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] [2021-12-21 13:41:17,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:41:17,977 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1508633655, now seen corresponding path program 1 times [2021-12-21 13:41:17,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:17,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062650531] [2021-12-21 13:41:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:17,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:18,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:18,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062650531] [2021-12-21 13:41:18,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062650531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:18,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:18,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:41:18,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151304728] [2021-12-21 13:41:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:18,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:41:18,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:18,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:41:18,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:41:18,066 INFO L87 Difference]: Start difference. First operand 2949 states and 4089 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-12-21 13:41:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:19,432 INFO L93 Difference]: Finished difference Result 8251 states and 11646 transitions. [2021-12-21 13:41:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:41:19,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2021-12-21 13:41:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:19,442 INFO L225 Difference]: With dead ends: 8251 [2021-12-21 13:41:19,443 INFO L226 Difference]: Without dead ends: 6444 [2021-12-21 13:41:19,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:41:19,446 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 2024 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:19,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2024 Valid, 1471 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:41:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6444 states. [2021-12-21 13:41:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6444 to 2920. [2021-12-21 13:41:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.3882030178326474) internal successors, (4048), 2919 states have internal predecessors, (4048), 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) [2021-12-21 13:41:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4048 transitions. [2021-12-21 13:41:19,818 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4048 transitions. Word has length 55 [2021-12-21 13:41:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:19,818 INFO L470 AbstractCegarLoop]: Abstraction has 2920 states and 4048 transitions. [2021-12-21 13:41:19,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-12-21 13:41:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4048 transitions. [2021-12-21 13:41:19,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 13:41:19,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:19,821 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] [2021-12-21 13:41:19,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:41:19,821 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:19,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:19,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1235712110, now seen corresponding path program 1 times [2021-12-21 13:41:19,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:19,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324468973] [2021-12-21 13:41:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:19,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:19,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:19,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324468973] [2021-12-21 13:41:19,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324468973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:19,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:19,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:41:19,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395307981] [2021-12-21 13:41:19,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:19,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:41:19,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:41:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:41:19,890 INFO L87 Difference]: Start difference. First operand 2920 states and 4048 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-12-21 13:41:21,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:21,362 INFO L93 Difference]: Finished difference Result 7125 states and 10083 transitions. [2021-12-21 13:41:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:41:21,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2021-12-21 13:41:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:21,371 INFO L225 Difference]: With dead ends: 7125 [2021-12-21 13:41:21,371 INFO L226 Difference]: Without dead ends: 7120 [2021-12-21 13:41:21,372 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 [2021-12-21 13:41:21,373 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 2336 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:21,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2336 Valid, 1222 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:41:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2021-12-21 13:41:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 2920. [2021-12-21 13:41:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.387517146776406) internal successors, (4046), 2919 states have internal predecessors, (4046), 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) [2021-12-21 13:41:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4046 transitions. [2021-12-21 13:41:21,712 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4046 transitions. Word has length 55 [2021-12-21 13:41:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:21,712 INFO L470 AbstractCegarLoop]: Abstraction has 2920 states and 4046 transitions. [2021-12-21 13:41:21,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-12-21 13:41:21,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4046 transitions. [2021-12-21 13:41:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 13:41:21,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:21,714 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] [2021-12-21 13:41:21,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:41:21,715 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1411677613, now seen corresponding path program 1 times [2021-12-21 13:41:21,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:21,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230689028] [2021-12-21 13:41:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:21,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:21,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:21,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230689028] [2021-12-21 13:41:21,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230689028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:21,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:21,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:21,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197253708] [2021-12-21 13:41:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:21,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:21,744 INFO L87 Difference]: Start difference. First operand 2920 states and 4046 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 13:41:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:22,082 INFO L93 Difference]: Finished difference Result 4193 states and 5857 transitions. [2021-12-21 13:41:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:22,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-12-21 13:41:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:22,085 INFO L225 Difference]: With dead ends: 4193 [2021-12-21 13:41:22,085 INFO L226 Difference]: Without dead ends: 2927 [2021-12-21 13:41:22,087 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 [2021-12-21 13:41:22,087 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 224 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:22,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 797 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2021-12-21 13:41:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2920. [2021-12-21 13:41:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.3737997256515775) internal successors, (4006), 2919 states have internal predecessors, (4006), 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) [2021-12-21 13:41:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4006 transitions. [2021-12-21 13:41:22,408 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4006 transitions. Word has length 56 [2021-12-21 13:41:22,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:22,408 INFO L470 AbstractCegarLoop]: Abstraction has 2920 states and 4006 transitions. [2021-12-21 13:41:22,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 13:41:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4006 transitions. [2021-12-21 13:41:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 13:41:22,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:22,410 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] [2021-12-21 13:41:22,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:41:22,411 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1038080617, now seen corresponding path program 1 times [2021-12-21 13:41:22,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:22,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610307048] [2021-12-21 13:41:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:22,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:22,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610307048] [2021-12-21 13:41:22,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610307048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:22,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:22,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:22,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674579012] [2021-12-21 13:41:22,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:22,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:22,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:22,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:22,436 INFO L87 Difference]: Start difference. First operand 2920 states and 4006 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 13:41:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:22,763 INFO L93 Difference]: Finished difference Result 4260 states and 5889 transitions. [2021-12-21 13:41:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:22,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-12-21 13:41:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:22,767 INFO L225 Difference]: With dead ends: 4260 [2021-12-21 13:41:22,767 INFO L226 Difference]: Without dead ends: 2926 [2021-12-21 13:41:22,769 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 [2021-12-21 13:41:22,770 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 240 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:22,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 802 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-12-21 13:41:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2920. [2021-12-21 13:41:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2916 states have (on average 1.3614540466392318) internal successors, (3970), 2919 states have internal predecessors, (3970), 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) [2021-12-21 13:41:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3970 transitions. [2021-12-21 13:41:23,112 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3970 transitions. Word has length 56 [2021-12-21 13:41:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:23,112 INFO L470 AbstractCegarLoop]: Abstraction has 2920 states and 3970 transitions. [2021-12-21 13:41:23,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 13:41:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3970 transitions. [2021-12-21 13:41:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 13:41:23,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:23,114 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] [2021-12-21 13:41:23,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:41:23,115 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:23,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1735355720, now seen corresponding path program 1 times [2021-12-21 13:41:23,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:23,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298437352] [2021-12-21 13:41:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:23,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:23,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298437352] [2021-12-21 13:41:23,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298437352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:23,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:23,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:23,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87162912] [2021-12-21 13:41:23,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:23,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:23,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:23,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:23,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:23,141 INFO L87 Difference]: Start difference. First operand 2920 states and 3970 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 13:41:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:23,481 INFO L93 Difference]: Finished difference Result 4010 states and 5458 transitions. [2021-12-21 13:41:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:23,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-12-21 13:41:23,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:23,485 INFO L225 Difference]: With dead ends: 4010 [2021-12-21 13:41:23,485 INFO L226 Difference]: Without dead ends: 2911 [2021-12-21 13:41:23,487 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 [2021-12-21 13:41:23,487 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 259 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:23,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 813 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-12-21 13:41:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2905. [2021-12-21 13:41:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2901 states have (on average 1.3340227507755946) internal successors, (3870), 2904 states have internal predecessors, (3870), 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) [2021-12-21 13:41:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3870 transitions. [2021-12-21 13:41:23,908 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3870 transitions. Word has length 56 [2021-12-21 13:41:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:23,909 INFO L470 AbstractCegarLoop]: Abstraction has 2905 states and 3870 transitions. [2021-12-21 13:41:23,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-21 13:41:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3870 transitions. [2021-12-21 13:41:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-21 13:41:23,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:23,912 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] [2021-12-21 13:41:23,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:41:23,912 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1293695138, now seen corresponding path program 1 times [2021-12-21 13:41:23,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:23,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002858229] [2021-12-21 13:41:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:23,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:23,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:23,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002858229] [2021-12-21 13:41:23,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002858229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:23,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:23,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:23,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405565367] [2021-12-21 13:41:23,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:23,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:23,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:23,941 INFO L87 Difference]: Start difference. First operand 2905 states and 3870 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-12-21 13:41:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:24,443 INFO L93 Difference]: Finished difference Result 4583 states and 6152 transitions. [2021-12-21 13:41:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:24,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-12-21 13:41:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:24,448 INFO L225 Difference]: With dead ends: 4583 [2021-12-21 13:41:24,448 INFO L226 Difference]: Without dead ends: 3323 [2021-12-21 13:41:24,449 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 [2021-12-21 13:41:24,450 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 324 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:24,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 532 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-12-21 13:41:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 2723. [2021-12-21 13:41:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2719 states have (on average 1.3365207796984184) internal successors, (3634), 2722 states have internal predecessors, (3634), 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) [2021-12-21 13:41:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3634 transitions. [2021-12-21 13:41:24,774 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3634 transitions. Word has length 57 [2021-12-21 13:41:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:24,775 INFO L470 AbstractCegarLoop]: Abstraction has 2723 states and 3634 transitions. [2021-12-21 13:41:24,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-12-21 13:41:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3634 transitions. [2021-12-21 13:41:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 13:41:24,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:24,776 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] [2021-12-21 13:41:24,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:41:24,776 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1073895861, now seen corresponding path program 1 times [2021-12-21 13:41:24,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:24,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513154145] [2021-12-21 13:41:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:24,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:25,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513154145] [2021-12-21 13:41:25,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513154145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:25,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:25,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:41:25,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772869951] [2021-12-21 13:41:25,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:25,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:41:25,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:41:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:41:25,032 INFO L87 Difference]: Start difference. First operand 2723 states and 3634 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-12-21 13:41:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:26,596 INFO L93 Difference]: Finished difference Result 6103 states and 8287 transitions. [2021-12-21 13:41:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:41:26,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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 [2021-12-21 13:41:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:26,603 INFO L225 Difference]: With dead ends: 6103 [2021-12-21 13:41:26,603 INFO L226 Difference]: Without dead ends: 5689 [2021-12-21 13:41:26,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:41:26,604 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 2589 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2589 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:26,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2589 Valid, 3188 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:41:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2021-12-21 13:41:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 2677. [2021-12-21 13:41:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2674 states have (on average 1.337696335078534) internal successors, (3577), 2676 states have internal predecessors, (3577), 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) [2021-12-21 13:41:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3577 transitions. [2021-12-21 13:41:27,004 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3577 transitions. Word has length 58 [2021-12-21 13:41:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:27,004 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 3577 transitions. [2021-12-21 13:41:27,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-12-21 13:41:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3577 transitions. [2021-12-21 13:41:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 13:41:27,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:27,006 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] [2021-12-21 13:41:27,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:41:27,006 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1243428052, now seen corresponding path program 1 times [2021-12-21 13:41:27,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:27,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820007586] [2021-12-21 13:41:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:27,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:27,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:27,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820007586] [2021-12-21 13:41:27,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820007586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:27,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:27,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:41:27,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655575189] [2021-12-21 13:41:27,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:27,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:41:27,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:27,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:41:27,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:41:27,237 INFO L87 Difference]: Start difference. First operand 2677 states and 3577 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-12-21 13:41:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:28,757 INFO L93 Difference]: Finished difference Result 5282 states and 7173 transitions. [2021-12-21 13:41:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:41:28,757 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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 [2021-12-21 13:41:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:28,762 INFO L225 Difference]: With dead ends: 5282 [2021-12-21 13:41:28,762 INFO L226 Difference]: Without dead ends: 5171 [2021-12-21 13:41:28,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:41:28,763 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 2377 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:28,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2377 Valid, 2713 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:41:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5171 states. [2021-12-21 13:41:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5171 to 2662. [2021-12-21 13:41:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2660 states have (on average 1.33796992481203) internal successors, (3559), 2661 states have internal predecessors, (3559), 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) [2021-12-21 13:41:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3559 transitions. [2021-12-21 13:41:29,148 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3559 transitions. Word has length 58 [2021-12-21 13:41:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:29,149 INFO L470 AbstractCegarLoop]: Abstraction has 2662 states and 3559 transitions. [2021-12-21 13:41:29,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 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) [2021-12-21 13:41:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3559 transitions. [2021-12-21 13:41:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 13:41:29,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:29,150 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] [2021-12-21 13:41:29,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:41:29,151 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1779959307, now seen corresponding path program 1 times [2021-12-21 13:41:29,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:29,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32897386] [2021-12-21 13:41:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:29,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:29,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:29,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32897386] [2021-12-21 13:41:29,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32897386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:29,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:29,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:41:29,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361646548] [2021-12-21 13:41:29,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:29,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:41:29,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:41:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:41:29,351 INFO L87 Difference]: Start difference. First operand 2662 states and 3559 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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) [2021-12-21 13:41:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:30,979 INFO L93 Difference]: Finished difference Result 5380 states and 7290 transitions. [2021-12-21 13:41:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 13:41:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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 [2021-12-21 13:41:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:30,985 INFO L225 Difference]: With dead ends: 5380 [2021-12-21 13:41:30,985 INFO L226 Difference]: Without dead ends: 5024 [2021-12-21 13:41:30,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2021-12-21 13:41:30,987 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 3758 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:30,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3758 Valid, 2537 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:41:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2021-12-21 13:41:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 2611. [2021-12-21 13:41:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2610 states have (on average 1.3398467432950192) internal successors, (3497), 2610 states have internal predecessors, (3497), 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) [2021-12-21 13:41:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3497 transitions. [2021-12-21 13:41:31,465 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3497 transitions. Word has length 58 [2021-12-21 13:41:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:31,465 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3497 transitions. [2021-12-21 13:41:31,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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) [2021-12-21 13:41:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3497 transitions. [2021-12-21 13:41:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 13:41:31,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:31,468 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] [2021-12-21 13:41:31,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:41:31,468 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash 590074057, now seen corresponding path program 1 times [2021-12-21 13:41:31,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:31,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532907140] [2021-12-21 13:41:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:31,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:31,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:31,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532907140] [2021-12-21 13:41:31,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532907140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:31,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:31,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:41:31,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25593898] [2021-12-21 13:41:31,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:31,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:41:31,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:41:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:41:31,506 INFO L87 Difference]: Start difference. First operand 2611 states and 3497 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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) [2021-12-21 13:41:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:32,504 INFO L93 Difference]: Finished difference Result 6274 states and 8641 transitions. [2021-12-21 13:41:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:41:32,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 [2021-12-21 13:41:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:32,509 INFO L225 Difference]: With dead ends: 6274 [2021-12-21 13:41:32,509 INFO L226 Difference]: Without dead ends: 4715 [2021-12-21 13:41:32,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:41:32,511 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1197 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:32,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 881 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2021-12-21 13:41:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4058. [2021-12-21 13:41:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 4057 states have (on average 1.3433571604633967) internal successors, (5450), 4057 states have internal predecessors, (5450), 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) [2021-12-21 13:41:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 5450 transitions. [2021-12-21 13:41:33,315 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 5450 transitions. Word has length 68 [2021-12-21 13:41:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:33,315 INFO L470 AbstractCegarLoop]: Abstraction has 4058 states and 5450 transitions. [2021-12-21 13:41:33,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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) [2021-12-21 13:41:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 5450 transitions. [2021-12-21 13:41:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 13:41:33,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:33,318 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] [2021-12-21 13:41:33,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:41:33,318 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510355, now seen corresponding path program 1 times [2021-12-21 13:41:33,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:33,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530986263] [2021-12-21 13:41:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:33,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:33,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:33,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530986263] [2021-12-21 13:41:33,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530986263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:33,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:33,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:41:33,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099297570] [2021-12-21 13:41:33,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:33,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:41:33,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:33,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:41:33,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:41:33,390 INFO L87 Difference]: Start difference. First operand 4058 states and 5450 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2021-12-21 13:41:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:34,230 INFO L93 Difference]: Finished difference Result 4064 states and 5453 transitions. [2021-12-21 13:41:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:41:34,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 [2021-12-21 13:41:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:34,235 INFO L225 Difference]: With dead ends: 4064 [2021-12-21 13:41:34,235 INFO L226 Difference]: Without dead ends: 3565 [2021-12-21 13:41:34,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:41:34,237 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 640 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:34,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 847 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:34,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-12-21 13:41:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3561. [2021-12-21 13:41:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.347752808988764) internal successors, (4798), 3560 states have internal predecessors, (4798), 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) [2021-12-21 13:41:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4798 transitions. [2021-12-21 13:41:35,007 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4798 transitions. Word has length 69 [2021-12-21 13:41:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:35,007 INFO L470 AbstractCegarLoop]: Abstraction has 3561 states and 4798 transitions. [2021-12-21 13:41:35,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2021-12-21 13:41:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4798 transitions. [2021-12-21 13:41:35,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-21 13:41:35,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:35,011 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] [2021-12-21 13:41:35,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 13:41:35,011 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash -533504505, now seen corresponding path program 1 times [2021-12-21 13:41:35,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:35,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113430683] [2021-12-21 13:41:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:35,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:35,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:35,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113430683] [2021-12-21 13:41:35,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113430683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:35,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:35,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:35,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128254393] [2021-12-21 13:41:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:35,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:35,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:35,043 INFO L87 Difference]: Start difference. First operand 3561 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2021-12-21 13:41:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:36,374 INFO L93 Difference]: Finished difference Result 8305 states and 11340 transitions. [2021-12-21 13:41:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 [2021-12-21 13:41:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:36,381 INFO L225 Difference]: With dead ends: 8305 [2021-12-21 13:41:36,382 INFO L226 Difference]: Without dead ends: 5615 [2021-12-21 13:41:36,384 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 [2021-12-21 13:41:36,384 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 139 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:36,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 635 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2021-12-21 13:41:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5297. [2021-12-21 13:41:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.3402567975830815) internal successors, (7098), 5296 states have internal predecessors, (7098), 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) [2021-12-21 13:41:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7098 transitions. [2021-12-21 13:41:37,620 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7098 transitions. Word has length 70 [2021-12-21 13:41:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:37,620 INFO L470 AbstractCegarLoop]: Abstraction has 5297 states and 7098 transitions. [2021-12-21 13:41:37,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2021-12-21 13:41:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7098 transitions. [2021-12-21 13:41:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 13:41:37,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:37,622 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] [2021-12-21 13:41:37,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 13:41:37,623 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:37,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:37,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1110878122, now seen corresponding path program 1 times [2021-12-21 13:41:37,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:37,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097689664] [2021-12-21 13:41:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:37,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:37,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:37,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097689664] [2021-12-21 13:41:37,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097689664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:37,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:37,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:37,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804261043] [2021-12-21 13:41:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:37,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:37,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:37,661 INFO L87 Difference]: Start difference. First operand 5297 states and 7098 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-12-21 13:41:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:39,860 INFO L93 Difference]: Finished difference Result 13673 states and 18584 transitions. [2021-12-21 13:41:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-12-21 13:41:39,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:39,873 INFO L225 Difference]: With dead ends: 13673 [2021-12-21 13:41:39,874 INFO L226 Difference]: Without dead ends: 9285 [2021-12-21 13:41:39,877 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 [2021-12-21 13:41:39,878 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 120 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:39,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 629 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9285 states. [2021-12-21 13:41:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9285 to 8547. [2021-12-21 13:41:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8547 states, 8546 states have (on average 1.3433185115843669) internal successors, (11480), 8546 states have internal predecessors, (11480), 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) [2021-12-21 13:41:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 11480 transitions. [2021-12-21 13:41:41,882 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 11480 transitions. Word has length 71 [2021-12-21 13:41:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:41,882 INFO L470 AbstractCegarLoop]: Abstraction has 8547 states and 11480 transitions. [2021-12-21 13:41:41,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-12-21 13:41:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 11480 transitions. [2021-12-21 13:41:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 13:41:41,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:41,885 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] [2021-12-21 13:41:41,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 13:41:41,885 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash -396168239, now seen corresponding path program 1 times [2021-12-21 13:41:41,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:41,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398980243] [2021-12-21 13:41:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:41,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:41,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:41,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398980243] [2021-12-21 13:41:41,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398980243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:41,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:41,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:41:41,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498006048] [2021-12-21 13:41:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:41,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:41:41,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:41,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:41:41,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:41:41,914 INFO L87 Difference]: Start difference. First operand 8547 states and 11480 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-12-21 13:41:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:45,786 INFO L93 Difference]: Finished difference Result 23023 states and 31122 transitions. [2021-12-21 13:41:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:41:45,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-12-21 13:41:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:45,803 INFO L225 Difference]: With dead ends: 23023 [2021-12-21 13:41:45,803 INFO L226 Difference]: Without dead ends: 15385 [2021-12-21 13:41:45,809 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 [2021-12-21 13:41:45,809 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 102 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:45,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 614 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15385 states. [2021-12-21 13:41:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15385 to 13911. [2021-12-21 13:41:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13911 states, 13910 states have (on average 1.3357296908698777) internal successors, (18580), 13910 states have internal predecessors, (18580), 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) [2021-12-21 13:41:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13911 states to 13911 states and 18580 transitions. [2021-12-21 13:41:49,319 INFO L78 Accepts]: Start accepts. Automaton has 13911 states and 18580 transitions. Word has length 73 [2021-12-21 13:41:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:41:49,319 INFO L470 AbstractCegarLoop]: Abstraction has 13911 states and 18580 transitions. [2021-12-21 13:41:49,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-12-21 13:41:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13911 states and 18580 transitions. [2021-12-21 13:41:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-21 13:41:49,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:41:49,322 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] [2021-12-21 13:41:49,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 13:41:49,322 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:41:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:41:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1606128063, now seen corresponding path program 1 times [2021-12-21 13:41:49,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:41:49,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136945918] [2021-12-21 13:41:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:41:49,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:41:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:41:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:41:49,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:41:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136945918] [2021-12-21 13:41:49,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136945918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:41:49,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:41:49,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:41:49,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604293124] [2021-12-21 13:41:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:41:49,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:41:49,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:41:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:41:49,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:41:49,370 INFO L87 Difference]: Start difference. First operand 13911 states and 18580 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-12-21 13:41:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:41:57,538 INFO L93 Difference]: Finished difference Result 29751 states and 39192 transitions. [2021-12-21 13:41:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:41:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 75 [2021-12-21 13:41:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:41:57,579 INFO L225 Difference]: With dead ends: 29751 [2021-12-21 13:41:57,580 INFO L226 Difference]: Without dead ends: 29749 [2021-12-21 13:41:57,587 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 [2021-12-21 13:41:57,587 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 368 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:41:57,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1509 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:41:57,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29749 states. [2021-12-21 13:42:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29749 to 15255. [2021-12-21 13:42:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15255 states, 15254 states have (on average 1.3061492067654386) internal successors, (19924), 15254 states have internal predecessors, (19924), 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) [2021-12-21 13:42:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15255 states to 15255 states and 19924 transitions. [2021-12-21 13:42:01,976 INFO L78 Accepts]: Start accepts. Automaton has 15255 states and 19924 transitions. Word has length 75 [2021-12-21 13:42:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:01,976 INFO L470 AbstractCegarLoop]: Abstraction has 15255 states and 19924 transitions. [2021-12-21 13:42:01,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-12-21 13:42:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 15255 states and 19924 transitions. [2021-12-21 13:42:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-21 13:42:01,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:01,979 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] [2021-12-21 13:42:01,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-21 13:42:01,979 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:42:01,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash 824153179, now seen corresponding path program 1 times [2021-12-21 13:42:01,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:01,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735688265] [2021-12-21 13:42:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:01,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:02,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735688265] [2021-12-21 13:42:02,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735688265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:02,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:02,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:02,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410124870] [2021-12-21 13:42:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:02,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:02,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:02,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:02,008 INFO L87 Difference]: Start difference. First operand 15255 states and 19924 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-12-21 13:42:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:08,289 INFO L93 Difference]: Finished difference Result 36835 states and 48094 transitions. [2021-12-21 13:42:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:08,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-12-21 13:42:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:08,318 INFO L225 Difference]: With dead ends: 36835 [2021-12-21 13:42:08,318 INFO L226 Difference]: Without dead ends: 22489 [2021-12-21 13:42:08,332 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 [2021-12-21 13:42:08,333 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 225 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:08,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 462 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22489 states. [2021-12-21 13:42:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22489 to 22487. [2021-12-21 13:42:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22487 states, 22486 states have (on average 1.289513475051143) internal successors, (28996), 22486 states have internal predecessors, (28996), 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) [2021-12-21 13:42:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22487 states to 22487 states and 28996 transitions. [2021-12-21 13:42:14,573 INFO L78 Accepts]: Start accepts. Automaton has 22487 states and 28996 transitions. Word has length 76 [2021-12-21 13:42:14,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:14,573 INFO L470 AbstractCegarLoop]: Abstraction has 22487 states and 28996 transitions. [2021-12-21 13:42:14,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-12-21 13:42:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 22487 states and 28996 transitions. [2021-12-21 13:42:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-21 13:42:14,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:14,576 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] [2021-12-21 13:42:14,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-21 13:42:14,576 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-21 13:42:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1756244585, now seen corresponding path program 1 times [2021-12-21 13:42:14,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:14,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386839847] [2021-12-21 13:42:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:14,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:14,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:14,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386839847] [2021-12-21 13:42:14,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386839847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:14,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:14,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:42:14,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282869919] [2021-12-21 13:42:14,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:14,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:42:14,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:14,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:42:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:14,617 INFO L87 Difference]: Start difference. First operand 22487 states and 28996 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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)