./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c198beb0d28344ce853798ba0422f36d86e4a319bc1c9073be7222ccddc0e2fa --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:39:39,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:39:39,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:39:39,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:39:39,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:39:39,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:39:39,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:39:39,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:39:39,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:39:39,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:39:39,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:39:39,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:39:39,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:39:39,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:39:39,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:39:39,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:39:39,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:39:39,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:39:39,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:39:39,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:39:39,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:39:39,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:39:39,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:39:39,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:39:39,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:39:39,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:39:39,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:39:39,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:39:39,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:39:39,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:39:39,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:39:39,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:39:39,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:39:39,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:39:39,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:39:39,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:39:39,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:39:39,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:39:39,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:39:39,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:39:39,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:39:39,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:39:39,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:39:39,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:39:39,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:39:39,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:39:39,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:39:39,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:39:39,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:39:39,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:39:39,236 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:39:39,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:39:39,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:39:39,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:39:39,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:39:39,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:39:39,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:39:39,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:39:39,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:39:39,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:39:39,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:39:39,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:39:39,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:39:39,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:39:39,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:39:39,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:39:39,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:39:39,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:39:39,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:39:39,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:39:39,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:39:39,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:39:39,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:39:39,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:39:39,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:39:39,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:39:39,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c198beb0d28344ce853798ba0422f36d86e4a319bc1c9073be7222ccddc0e2fa [2021-12-15 11:39:39,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:39:39,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:39:39,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:39:39,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:39:39,495 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:39:39,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:39:39,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f71adeff/dde1a81eb89a4150a7ef29847e33f445/FLAG8c57956f0 [2021-12-15 11:39:40,059 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:39:40,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:39:40,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f71adeff/dde1a81eb89a4150a7ef29847e33f445/FLAG8c57956f0 [2021-12-15 11:39:40,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f71adeff/dde1a81eb89a4150a7ef29847e33f445 [2021-12-15 11:39:40,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:39:40,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:39:40,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:39:40,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:39:40,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:39:40,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:39:40" (1/1) ... [2021-12-15 11:39:40,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21caddaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:40, skipping insertion in model container [2021-12-15 11:39:40,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:39:40" (1/1) ... [2021-12-15 11:39:40,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:39:40,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:39:40,713 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2021-12-15 11:39:40,728 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2021-12-15 11:39:40,822 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2021-12-15 11:39:40,831 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2021-12-15 11:39:40,847 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2021-12-15 11:39:40,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:39:40,888 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:39:40,973 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2021-12-15 11:39:40,982 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2021-12-15 11:39:41,042 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2021-12-15 11:39:41,048 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2021-12-15 11:39:41,058 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2021-12-15 11:39:41,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:39:41,095 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:39:41,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41 WrapperNode [2021-12-15 11:39:41,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:39:41,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:39:41,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:39:41,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:39:41,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,209 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1696 [2021-12-15 11:39:41,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:39:41,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:39:41,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:39:41,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:39:41,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:39:41,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:39:41,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:39:41,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:39:41,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (1/1) ... [2021-12-15 11:39:41,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:39:41,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:39:41,336 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) [2021-12-15 11:39:41,361 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 [2021-12-15 11:39:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:39:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:39:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:39:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:39:41,537 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:39:41,552 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:39:42,620 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:39:42,632 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:39:42,632 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 11:39:42,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:39:42 BoogieIcfgContainer [2021-12-15 11:39:42,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:39:42,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:39:42,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:39:42,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:39:42,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:39:40" (1/3) ... [2021-12-15 11:39:42,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74eb58d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:39:42, skipping insertion in model container [2021-12-15 11:39:42,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:41" (2/3) ... [2021-12-15 11:39:42,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74eb58d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:39:42, skipping insertion in model container [2021-12-15 11:39:42,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:39:42" (3/3) ... [2021-12-15 11:39:42,659 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:39:42,663 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:39:42,663 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-15 11:39:42,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:39:42,724 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 [2021-12-15 11:39:42,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-15 11:39:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 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) [2021-12-15 11:39:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-15 11:39:42,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:42,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:42,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1455877833, now seen corresponding path program 1 times [2021-12-15 11:39:42,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:42,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153053698] [2021-12-15 11:39:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:42,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:43,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:43,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153053698] [2021-12-15 11:39:43,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153053698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:43,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:43,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:39:43,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622500125] [2021-12-15 11:39:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:43,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:39:43,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:39:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:39:43,277 INFO L87 Difference]: Start difference. First operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 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) Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:43,427 INFO L93 Difference]: Finished difference Result 767 states and 1341 transitions. [2021-12-15 11:39:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:39:43,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-15 11:39:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:43,447 INFO L225 Difference]: With dead ends: 767 [2021-12-15 11:39:43,447 INFO L226 Difference]: Without dead ends: 612 [2021-12-15 11:39:43,450 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 [2021-12-15 11:39:43,453 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 474 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:43,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1181 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:39:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-12-15 11:39:43,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2021-12-15 11:39:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 605 states have (on average 1.4793388429752066) internal successors, (895), 609 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2021-12-15 11:39:43,581 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 150 [2021-12-15 11:39:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:43,584 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2021-12-15 11:39:43,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2021-12-15 11:39:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-15 11:39:43,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:43,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:43,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:39:43,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:43,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:43,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1340171657, now seen corresponding path program 1 times [2021-12-15 11:39:43,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:43,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988879925] [2021-12-15 11:39:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:43,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:43,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:43,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988879925] [2021-12-15 11:39:43,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988879925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:43,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:43,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:39:43,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223861260] [2021-12-15 11:39:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:43,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:39:43,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:39:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:43,873 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:43,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:43,998 INFO L93 Difference]: Finished difference Result 1784 states and 2608 transitions. [2021-12-15 11:39:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:43,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-15 11:39:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:44,004 INFO L225 Difference]: With dead ends: 1784 [2021-12-15 11:39:44,004 INFO L226 Difference]: Without dead ends: 1183 [2021-12-15 11:39:44,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:44,009 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 1291 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:44,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 1534 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:39:44,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-12-15 11:39:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1156. [2021-12-15 11:39:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1151 states have (on average 1.466550825369244) internal successors, (1688), 1155 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1688 transitions. [2021-12-15 11:39:44,072 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1688 transitions. Word has length 150 [2021-12-15 11:39:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:44,072 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1688 transitions. [2021-12-15 11:39:44,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1688 transitions. [2021-12-15 11:39:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-15 11:39:44,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:44,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:44,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:39:44,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1287913931, now seen corresponding path program 1 times [2021-12-15 11:39:44,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:44,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377524209] [2021-12-15 11:39:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:44,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:44,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:44,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377524209] [2021-12-15 11:39:44,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377524209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:44,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:44,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:39:44,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668169591] [2021-12-15 11:39:44,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:44,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:39:44,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:44,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:39:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:39:44,175 INFO L87 Difference]: Start difference. First operand 1156 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:44,250 INFO L93 Difference]: Finished difference Result 3430 states and 5002 transitions. [2021-12-15 11:39:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:39:44,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-12-15 11:39:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:44,259 INFO L225 Difference]: With dead ends: 3430 [2021-12-15 11:39:44,260 INFO L226 Difference]: Without dead ends: 2302 [2021-12-15 11:39:44,262 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 [2021-12-15 11:39:44,265 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 594 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:44,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1397 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-12-15 11:39:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1158. [2021-12-15 11:39:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1153 states have (on average 1.4657415437987857) internal successors, (1690), 1157 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1690 transitions. [2021-12-15 11:39:44,321 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1690 transitions. Word has length 151 [2021-12-15 11:39:44,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:44,322 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1690 transitions. [2021-12-15 11:39:44,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1690 transitions. [2021-12-15 11:39:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-15 11:39:44,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:44,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:44,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 11:39:44,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1852245384, now seen corresponding path program 1 times [2021-12-15 11:39:44,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:44,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436720129] [2021-12-15 11:39:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:44,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:44,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:44,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436720129] [2021-12-15 11:39:44,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436720129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:44,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:44,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:39:44,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588626035] [2021-12-15 11:39:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:44,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:39:44,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:39:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:44,469 INFO L87 Difference]: Start difference. First operand 1158 states and 1690 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:44,603 INFO L93 Difference]: Finished difference Result 3356 states and 4874 transitions. [2021-12-15 11:39:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2021-12-15 11:39:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:44,612 INFO L225 Difference]: With dead ends: 3356 [2021-12-15 11:39:44,613 INFO L226 Difference]: Without dead ends: 2228 [2021-12-15 11:39:44,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:44,616 INFO L933 BasicCegarLoop]: 1049 mSDtfsCounter, 1198 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:44,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 1602 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-12-15 11:39:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2201. [2021-12-15 11:39:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2196 states have (on average 1.4489981785063752) internal successors, (3182), 2200 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3182 transitions. [2021-12-15 11:39:44,738 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3182 transitions. Word has length 152 [2021-12-15 11:39:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:44,739 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 3182 transitions. [2021-12-15 11:39:44,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3182 transitions. [2021-12-15 11:39:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-15 11:39:44,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:44,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:44,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 11:39:44,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash 258705708, now seen corresponding path program 1 times [2021-12-15 11:39:44,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:44,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134255434] [2021-12-15 11:39:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:44,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:44,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:44,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134255434] [2021-12-15 11:39:44,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134255434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:44,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:44,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:39:44,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129966675] [2021-12-15 11:39:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:44,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:39:44,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:44,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:39:44,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:39:44,817 INFO L87 Difference]: Start difference. First operand 2201 states and 3182 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:44,992 INFO L93 Difference]: Finished difference Result 6527 states and 9426 transitions. [2021-12-15 11:39:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:39:44,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-12-15 11:39:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:45,008 INFO L225 Difference]: With dead ends: 6527 [2021-12-15 11:39:45,008 INFO L226 Difference]: Without dead ends: 4370 [2021-12-15 11:39:45,014 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 [2021-12-15 11:39:45,016 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 580 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:45,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1331 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-12-15 11:39:45,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2205. [2021-12-15 11:39:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2200 states have (on average 1.4481818181818182) internal successors, (3186), 2204 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3186 transitions. [2021-12-15 11:39:45,145 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3186 transitions. Word has length 153 [2021-12-15 11:39:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:45,146 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 3186 transitions. [2021-12-15 11:39:45,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:45,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3186 transitions. [2021-12-15 11:39:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-15 11:39:45,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:45,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:45,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 11:39:45,151 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash 56905465, now seen corresponding path program 1 times [2021-12-15 11:39:45,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:45,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300886453] [2021-12-15 11:39:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:45,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:45,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:45,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300886453] [2021-12-15 11:39:45,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300886453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:45,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:45,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:39:45,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469882903] [2021-12-15 11:39:45,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:45,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:39:45,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:39:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:45,287 INFO L87 Difference]: Start difference. First operand 2205 states and 3186 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:45,522 INFO L93 Difference]: Finished difference Result 6028 states and 8657 transitions. [2021-12-15 11:39:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:45,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2021-12-15 11:39:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:45,537 INFO L225 Difference]: With dead ends: 6028 [2021-12-15 11:39:45,538 INFO L226 Difference]: Without dead ends: 3871 [2021-12-15 11:39:45,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:45,544 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 1263 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:45,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 1520 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2021-12-15 11:39:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3844. [2021-12-15 11:39:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3839 states have (on average 1.4240687679083095) internal successors, (5467), 3843 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 5467 transitions. [2021-12-15 11:39:45,737 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 5467 transitions. Word has length 154 [2021-12-15 11:39:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:45,739 INFO L470 AbstractCegarLoop]: Abstraction has 3844 states and 5467 transitions. [2021-12-15 11:39:45,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 5467 transitions. [2021-12-15 11:39:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-15 11:39:45,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:45,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:45,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 11:39:45,745 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash 954785037, now seen corresponding path program 1 times [2021-12-15 11:39:45,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606074220] [2021-12-15 11:39:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:45,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:45,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:45,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606074220] [2021-12-15 11:39:45,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606074220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:45,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:45,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:39:45,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084346507] [2021-12-15 11:39:45,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:45,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:39:45,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:39:45,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:39:45,801 INFO L87 Difference]: Start difference. First operand 3844 states and 5467 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:46,101 INFO L93 Difference]: Finished difference Result 11100 states and 15823 transitions. [2021-12-15 11:39:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:39:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-12-15 11:39:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:46,131 INFO L225 Difference]: With dead ends: 11100 [2021-12-15 11:39:46,131 INFO L226 Difference]: Without dead ends: 7596 [2021-12-15 11:39:46,138 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 [2021-12-15 11:39:46,141 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 566 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:46,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1764 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-12-15 11:39:46,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 3852. [2021-12-15 11:39:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3847 states have (on average 1.4231868988822458) internal successors, (5475), 3851 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5475 transitions. [2021-12-15 11:39:46,388 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5475 transitions. Word has length 155 [2021-12-15 11:39:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:46,389 INFO L470 AbstractCegarLoop]: Abstraction has 3852 states and 5475 transitions. [2021-12-15 11:39:46,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5475 transitions. [2021-12-15 11:39:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-15 11:39:46,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:46,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:46,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 11:39:46,396 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -536571574, now seen corresponding path program 1 times [2021-12-15 11:39:46,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:46,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897658702] [2021-12-15 11:39:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:46,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:46,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:46,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897658702] [2021-12-15 11:39:46,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897658702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:46,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:46,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:39:46,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137730891] [2021-12-15 11:39:46,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:46,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:39:46,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:46,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:39:46,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:46,510 INFO L87 Difference]: Start difference. First operand 3852 states and 5475 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:46,885 INFO L93 Difference]: Finished difference Result 11204 states and 15862 transitions. [2021-12-15 11:39:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:46,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2021-12-15 11:39:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:46,920 INFO L225 Difference]: With dead ends: 11204 [2021-12-15 11:39:46,921 INFO L226 Difference]: Without dead ends: 7440 [2021-12-15 11:39:46,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:46,929 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 1124 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:46,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2134 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:39:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7440 states. [2021-12-15 11:39:47,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7440 to 7413. [2021-12-15 11:39:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 7408 states have (on average 1.404292656587473) internal successors, (10403), 7412 states have internal predecessors, (10403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 10403 transitions. [2021-12-15 11:39:47,359 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 10403 transitions. Word has length 156 [2021-12-15 11:39:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:47,359 INFO L470 AbstractCegarLoop]: Abstraction has 7413 states and 10403 transitions. [2021-12-15 11:39:47,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 10403 transitions. [2021-12-15 11:39:47,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-15 11:39:47,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:47,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:47,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 11:39:47,370 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:47,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1526474758, now seen corresponding path program 1 times [2021-12-15 11:39:47,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:47,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903824455] [2021-12-15 11:39:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:47,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:47,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:47,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903824455] [2021-12-15 11:39:47,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903824455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:47,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:47,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:39:47,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450806780] [2021-12-15 11:39:47,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:47,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:39:47,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:47,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:39:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:47,467 INFO L87 Difference]: Start difference. First operand 7413 states and 10403 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:47,793 INFO L93 Difference]: Finished difference Result 13014 states and 18248 transitions. [2021-12-15 11:39:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:47,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2021-12-15 11:39:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:47,804 INFO L225 Difference]: With dead ends: 13014 [2021-12-15 11:39:47,804 INFO L226 Difference]: Without dead ends: 5675 [2021-12-15 11:39:47,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:47,813 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 65 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:47,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1846 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2021-12-15 11:39:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5675. [2021-12-15 11:39:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5675 states, 5670 states have (on average 1.4017636684303352) internal successors, (7948), 5674 states have internal predecessors, (7948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 7948 transitions. [2021-12-15 11:39:48,087 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 7948 transitions. Word has length 156 [2021-12-15 11:39:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:48,087 INFO L470 AbstractCegarLoop]: Abstraction has 5675 states and 7948 transitions. [2021-12-15 11:39:48,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 7948 transitions. [2021-12-15 11:39:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-15 11:39:48,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:48,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:48,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 11:39:48,097 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:48,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2039955482, now seen corresponding path program 1 times [2021-12-15 11:39:48,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:48,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101313652] [2021-12-15 11:39:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:48,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:48,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:48,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101313652] [2021-12-15 11:39:48,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101313652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:48,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:48,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:39:48,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081232867] [2021-12-15 11:39:48,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:48,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:39:48,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:39:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:39:48,148 INFO L87 Difference]: Start difference. First operand 5675 states and 7948 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:48,546 INFO L93 Difference]: Finished difference Result 13212 states and 18956 transitions. [2021-12-15 11:39:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:39:48,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2021-12-15 11:39:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:48,563 INFO L225 Difference]: With dead ends: 13212 [2021-12-15 11:39:48,563 INFO L226 Difference]: Without dead ends: 8149 [2021-12-15 11:39:48,574 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 [2021-12-15 11:39:48,575 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 315 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:48,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1277 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2021-12-15 11:39:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 7132. [2021-12-15 11:39:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7127 states have (on average 1.4453486740564052) internal successors, (10301), 7131 states have internal predecessors, (10301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10301 transitions. [2021-12-15 11:39:48,956 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10301 transitions. Word has length 158 [2021-12-15 11:39:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:48,957 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10301 transitions. [2021-12-15 11:39:48,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10301 transitions. [2021-12-15 11:39:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-15 11:39:48,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:48,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:48,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 11:39:48,966 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash -941287042, now seen corresponding path program 1 times [2021-12-15 11:39:48,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:48,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215340530] [2021-12-15 11:39:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:48,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:49,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215340530] [2021-12-15 11:39:49,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215340530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:49,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:49,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:39:49,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208222026] [2021-12-15 11:39:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:49,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:39:49,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:39:49,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:39:49,018 INFO L87 Difference]: Start difference. First operand 7132 states and 10301 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:49,662 INFO L93 Difference]: Finished difference Result 15693 states and 23187 transitions. [2021-12-15 11:39:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:39:49,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-12-15 11:39:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:49,692 INFO L225 Difference]: With dead ends: 15693 [2021-12-15 11:39:49,693 INFO L226 Difference]: Without dead ends: 10322 [2021-12-15 11:39:49,706 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 [2021-12-15 11:39:49,707 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 352 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:49,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1279 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-12-15 11:39:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 9350. [2021-12-15 11:39:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9350 states, 9345 states have (on average 1.4799357945425362) internal successors, (13830), 9349 states have internal predecessors, (13830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 13830 transitions. [2021-12-15 11:39:50,275 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 13830 transitions. Word has length 160 [2021-12-15 11:39:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:50,276 INFO L470 AbstractCegarLoop]: Abstraction has 9350 states and 13830 transitions. [2021-12-15 11:39:50,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 13830 transitions. [2021-12-15 11:39:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-15 11:39:50,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:50,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:50,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 11:39:50,285 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:50,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash 522123654, now seen corresponding path program 1 times [2021-12-15 11:39:50,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:50,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767206566] [2021-12-15 11:39:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:50,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:50,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:50,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767206566] [2021-12-15 11:39:50,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767206566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:50,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:50,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:39:50,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271589878] [2021-12-15 11:39:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:50,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:39:50,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:39:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:50,403 INFO L87 Difference]: Start difference. First operand 9350 states and 13830 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:51,260 INFO L93 Difference]: Finished difference Result 22275 states and 34095 transitions. [2021-12-15 11:39:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-15 11:39:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:51,306 INFO L225 Difference]: With dead ends: 22275 [2021-12-15 11:39:51,306 INFO L226 Difference]: Without dead ends: 16612 [2021-12-15 11:39:51,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:51,327 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1083 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:51,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 1043 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:39:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16612 states. [2021-12-15 11:39:52,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16612 to 16610. [2021-12-15 11:39:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 16605 states have (on average 1.4995483288166216) internal successors, (24900), 16609 states have internal predecessors, (24900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 24900 transitions. [2021-12-15 11:39:52,192 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 24900 transitions. Word has length 161 [2021-12-15 11:39:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:52,193 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 24900 transitions. [2021-12-15 11:39:52,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 24900 transitions. [2021-12-15 11:39:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-15 11:39:52,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:52,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:52,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 11:39:52,206 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:52,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1501052056, now seen corresponding path program 1 times [2021-12-15 11:39:52,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:52,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205546529] [2021-12-15 11:39:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:52,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:52,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205546529] [2021-12-15 11:39:52,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205546529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:52,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:52,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:39:52,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988881523] [2021-12-15 11:39:52,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:52,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:39:52,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:39:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:52,309 INFO L87 Difference]: Start difference. First operand 16610 states and 24900 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:53,757 INFO L93 Difference]: Finished difference Result 43376 states and 64954 transitions. [2021-12-15 11:39:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:53,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-15 11:39:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:53,824 INFO L225 Difference]: With dead ends: 43376 [2021-12-15 11:39:53,824 INFO L226 Difference]: Without dead ends: 26898 [2021-12-15 11:39:53,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:53,853 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 1180 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:53,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 1560 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:39:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26898 states. [2021-12-15 11:39:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26898 to 26875. [2021-12-15 11:39:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26875 states, 26870 states have (on average 1.4808336434685523) internal successors, (39790), 26874 states have internal predecessors, (39790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39790 transitions. [2021-12-15 11:39:55,133 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39790 transitions. Word has length 161 [2021-12-15 11:39:55,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:55,134 INFO L470 AbstractCegarLoop]: Abstraction has 26875 states and 39790 transitions. [2021-12-15 11:39:55,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39790 transitions. [2021-12-15 11:39:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-15 11:39:55,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:55,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:55,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 11:39:55,151 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash 965682877, now seen corresponding path program 1 times [2021-12-15 11:39:55,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:55,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477454979] [2021-12-15 11:39:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:55,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:55,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:55,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477454979] [2021-12-15 11:39:55,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477454979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:55,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:55,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:39:55,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116620340] [2021-12-15 11:39:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:55,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:39:55,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:39:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:39:55,268 INFO L87 Difference]: Start difference. First operand 26875 states and 39790 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:56,538 INFO L93 Difference]: Finished difference Result 47913 states and 70973 transitions. [2021-12-15 11:39:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:39:56,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2021-12-15 11:39:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:56,605 INFO L225 Difference]: With dead ends: 47913 [2021-12-15 11:39:56,606 INFO L226 Difference]: Without dead ends: 26875 [2021-12-15 11:39:56,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:39:56,648 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 53 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:39:56,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1819 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:39:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26875 states. [2021-12-15 11:39:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26875 to 26875. [2021-12-15 11:39:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26875 states, 26870 states have (on average 1.4807964272422776) internal successors, (39789), 26874 states have internal predecessors, (39789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39789 transitions. [2021-12-15 11:39:58,001 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39789 transitions. Word has length 163 [2021-12-15 11:39:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:39:58,001 INFO L470 AbstractCegarLoop]: Abstraction has 26875 states and 39789 transitions. [2021-12-15 11:39:58,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39789 transitions. [2021-12-15 11:39:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-15 11:39:58,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:39:58,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:39:58,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 11:39:58,017 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:39:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:39:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash 448440634, now seen corresponding path program 1 times [2021-12-15 11:39:58,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:39:58,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698822678] [2021-12-15 11:39:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:39:58,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:39:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:39:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:39:58,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:39:58,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698822678] [2021-12-15 11:39:58,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698822678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:39:58,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:39:58,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:39:58,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112589068] [2021-12-15 11:39:58,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:39:58,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:39:58,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:39:58,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:39:58,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:39:58,081 INFO L87 Difference]: Start difference. First operand 26875 states and 39789 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:39:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:39:59,905 INFO L93 Difference]: Finished difference Result 67145 states and 99680 transitions. [2021-12-15 11:39:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:39:59,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2021-12-15 11:39:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:39:59,976 INFO L225 Difference]: With dead ends: 67145 [2021-12-15 11:39:59,977 INFO L226 Difference]: Without dead ends: 41804 [2021-12-15 11:40:00,020 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 [2021-12-15 11:40:00,021 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 519 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:40:00,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 1218 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:40:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41804 states. [2021-12-15 11:40:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41804 to 41783. [2021-12-15 11:40:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41783 states, 41778 states have (on average 1.4628991335152473) internal successors, (61117), 41782 states have internal predecessors, (61117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:40:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41783 states to 41783 states and 61117 transitions. [2021-12-15 11:40:01,853 INFO L78 Accepts]: Start accepts. Automaton has 41783 states and 61117 transitions. Word has length 163 [2021-12-15 11:40:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:40:01,853 INFO L470 AbstractCegarLoop]: Abstraction has 41783 states and 61117 transitions. [2021-12-15 11:40:01,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:40:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 41783 states and 61117 transitions. [2021-12-15 11:40:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-15 11:40:01,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:40:01,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:40:01,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 11:40:01,874 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:40:01,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:40:01,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1989579749, now seen corresponding path program 1 times [2021-12-15 11:40:01,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:40:01,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935161220] [2021-12-15 11:40:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:40:01,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:40:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:40:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:40:02,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:40:02,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935161220] [2021-12-15 11:40:02,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935161220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:40:02,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:40:02,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:40:02,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780589752] [2021-12-15 11:40:02,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:40:02,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:40:02,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:40:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:40:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:40:02,104 INFO L87 Difference]: Start difference. First operand 41783 states and 61117 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:40:05,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:40:05,090 INFO L93 Difference]: Finished difference Result 99916 states and 148123 transitions. [2021-12-15 11:40:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:40:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2021-12-15 11:40:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:40:05,297 INFO L225 Difference]: With dead ends: 99916 [2021-12-15 11:40:05,297 INFO L226 Difference]: Without dead ends: 65735 [2021-12-15 11:40:05,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:40:05,340 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 314 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:40:05,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 1259 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:40:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65735 states. [2021-12-15 11:40:08,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65735 to 59919. [2021-12-15 11:40:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59919 states, 59914 states have (on average 1.4943251994525486) internal successors, (89531), 59918 states have internal predecessors, (89531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:40:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59919 states to 59919 states and 89531 transitions. [2021-12-15 11:40:08,481 INFO L78 Accepts]: Start accepts. Automaton has 59919 states and 89531 transitions. Word has length 167 [2021-12-15 11:40:08,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:40:08,481 INFO L470 AbstractCegarLoop]: Abstraction has 59919 states and 89531 transitions. [2021-12-15 11:40:08,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:40:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 59919 states and 89531 transitions. [2021-12-15 11:40:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-15 11:40:08,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:40:08,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:40:08,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 11:40:08,497 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:40:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:40:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1583623339, now seen corresponding path program 1 times [2021-12-15 11:40:08,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:40:08,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113813865] [2021-12-15 11:40:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:40:08,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:40:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:40:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:40:08,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:40:08,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113813865] [2021-12-15 11:40:08,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113813865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:40:08,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:40:08,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:40:08,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757959775] [2021-12-15 11:40:08,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:40:08,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:40:08,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:40:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:40:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:40:08,537 INFO L87 Difference]: Start difference. First operand 59919 states and 89531 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:40:14,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:40:14,178 INFO L93 Difference]: Finished difference Result 171785 states and 258481 transitions. [2021-12-15 11:40:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:40:14,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-12-15 11:40:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:40:14,448 INFO L225 Difference]: With dead ends: 171785 [2021-12-15 11:40:14,448 INFO L226 Difference]: Without dead ends: 116507 [2021-12-15 11:40:14,514 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 [2021-12-15 11:40:14,516 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 501 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:40:14,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1044 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:40:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116507 states.