./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:02:59,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:02:59,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:02:59,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:02:59,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:02:59,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:02:59,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:02:59,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:02:59,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:02:59,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:02:59,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:02:59,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:02:59,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:02:59,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:02:59,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:02:59,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:02:59,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:03:00,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:03:00,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:03:00,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:03:00,018 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:03:00,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:03:00,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:03:00,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:03:00,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:03:00,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:03:00,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:03:00,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:03:00,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:03:00,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:03:00,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:03:00,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:03:00,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:03:00,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:03:00,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:03:00,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:03:00,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:03:00,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:03:00,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:03:00,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:03:00,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:03:00,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:03:00,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:03:00,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:03:00,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:03:00,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:03:00,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:03:00,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:03:00,093 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:03:00,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:03:00,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:03:00,094 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:03:00,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:03:00,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:03:00,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:03:00,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:03:00,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:03:00,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:03:00,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:03:00,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:03:00,095 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:03:00,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:03:00,096 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:03:00,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:03:00,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:03:00,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:03:00,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:03:00,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:03:00,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:03:00,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:03:00,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:03:00,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:03:00,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:03:00,098 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:03:00,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:03:00,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:03:00,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 648a34748ee6f317001c61f0628c2e00b2100c77ff87e7d85b52ec2f91d6d096 [2022-07-22 18:03:00,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:03:00,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:03:00,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:03:00,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:03:00,597 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:03:00,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-07-22 18:03:00,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df3b6e53/2530260f4a3b4fafb308413bd22f36c0/FLAG071e117e8 [2022-07-22 18:03:01,400 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:03:01,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-07-22 18:03:01,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df3b6e53/2530260f4a3b4fafb308413bd22f36c0/FLAG071e117e8 [2022-07-22 18:03:01,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df3b6e53/2530260f4a3b4fafb308413bd22f36c0 [2022-07-22 18:03:01,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:03:01,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:03:01,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:03:01,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:03:01,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:03:01,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:03:01" (1/1) ... [2022-07-22 18:03:01,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4f2650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:01, skipping insertion in model container [2022-07-22 18:03:01,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:03:01" (1/1) ... [2022-07-22 18:03:01,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:03:01,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:03:02,062 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2022-07-22 18:03:02,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:03:02,087 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:03:02,163 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2022-07-22 18:03:02,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:03:02,187 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:03:02,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02 WrapperNode [2022-07-22 18:03:02,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:03:02,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:03:02,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:03:02,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:03:02,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,291 INFO L137 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 455 [2022-07-22 18:03:02,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:03:02,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:03:02,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:03:02,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:03:02,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:03:02,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:03:02,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:03:02,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:03:02,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (1/1) ... [2022-07-22 18:03:02,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:03:02,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:03:02,433 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) [2022-07-22 18:03:02,465 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 [2022-07-22 18:03:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:03:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:03:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:03:02,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:03:02,687 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:03:02,705 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:03:03,380 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:03:03,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:03:03,388 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:03:03,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:03:03 BoogieIcfgContainer [2022-07-22 18:03:03,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:03:03,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:03:03,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:03:03,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:03:03,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:03:01" (1/3) ... [2022-07-22 18:03:03,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff6f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:03:03, skipping insertion in model container [2022-07-22 18:03:03,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:03:02" (2/3) ... [2022-07-22 18:03:03,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff6f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:03:03, skipping insertion in model container [2022-07-22 18:03:03,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:03:03" (3/3) ... [2022-07-22 18:03:03,397 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-07-22 18:03:03,409 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:03:03,418 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:03:03,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:03:03,508 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e8887c7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71a7fcdf [2022-07-22 18:03:03,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:03:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 141 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:03,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 18:03:03,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:03,537 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:03,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:03,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1765981308, now seen corresponding path program 1 times [2022-07-22 18:03:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:03,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356013538] [2022-07-22 18:03:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:04,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356013538] [2022-07-22 18:03:04,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356013538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:04,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:04,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:03:04,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999091388] [2022-07-22 18:03:04,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:04,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:03:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:03:04,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:03:04,097 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 141 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:04,292 INFO L93 Difference]: Finished difference Result 241 states and 398 transitions. [2022-07-22 18:03:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:03:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-22 18:03:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:04,312 INFO L225 Difference]: With dead ends: 241 [2022-07-22 18:03:04,312 INFO L226 Difference]: Without dead ends: 138 [2022-07-22 18:03:04,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:03:04,317 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 3 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:04,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 900 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-22 18:03:04,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-07-22 18:03:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4087591240875912) internal successors, (193), 137 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2022-07-22 18:03:04,413 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 37 [2022-07-22 18:03:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:04,413 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2022-07-22 18:03:04,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2022-07-22 18:03:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 18:03:04,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:04,427 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:04,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:03:04,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:04,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1408949682, now seen corresponding path program 1 times [2022-07-22 18:03:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:04,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877858067] [2022-07-22 18:03:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:04,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:04,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877858067] [2022-07-22 18:03:04,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877858067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:04,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:04,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560983584] [2022-07-22 18:03:04,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:04,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:04,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:04,689 INFO L87 Difference]: Start difference. First operand 138 states and 193 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:04,738 INFO L93 Difference]: Finished difference Result 308 states and 465 transitions. [2022-07-22 18:03:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:04,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-22 18:03:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:04,749 INFO L225 Difference]: With dead ends: 308 [2022-07-22 18:03:04,751 INFO L226 Difference]: Without dead ends: 217 [2022-07-22 18:03:04,752 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:03:04,753 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 130 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:04,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 438 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-22 18:03:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-07-22 18:03:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4813084112149533) internal successors, (317), 214 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2022-07-22 18:03:04,797 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 317 transitions. Word has length 77 [2022-07-22 18:03:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:04,798 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 317 transitions. [2022-07-22 18:03:04,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 317 transitions. [2022-07-22 18:03:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:03:04,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:04,803 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:04,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:03:04,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:04,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1762847602, now seen corresponding path program 1 times [2022-07-22 18:03:04,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:04,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427923958] [2022-07-22 18:03:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:04,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:04,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:04,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427923958] [2022-07-22 18:03:04,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427923958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:04,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:04,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:04,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730062156] [2022-07-22 18:03:04,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:04,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:04,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:04,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:04,998 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:05,062 INFO L93 Difference]: Finished difference Result 527 states and 817 transitions. [2022-07-22 18:03:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-07-22 18:03:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:05,067 INFO L225 Difference]: With dead ends: 527 [2022-07-22 18:03:05,067 INFO L226 Difference]: Without dead ends: 359 [2022-07-22 18:03:05,070 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:03:05,078 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 125 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:05,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 429 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:05,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-22 18:03:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-07-22 18:03:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5280898876404494) internal successors, (544), 356 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 544 transitions. [2022-07-22 18:03:05,142 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 544 transitions. Word has length 78 [2022-07-22 18:03:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:05,144 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 544 transitions. [2022-07-22 18:03:05,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 544 transitions. [2022-07-22 18:03:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 18:03:05,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:05,147 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:03:05,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash -863425826, now seen corresponding path program 1 times [2022-07-22 18:03:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:05,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040942551] [2022-07-22 18:03:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:05,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040942551] [2022-07-22 18:03:05,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040942551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277323420] [2022-07-22 18:03:05,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,309 INFO L87 Difference]: Start difference. First operand 357 states and 544 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:05,355 INFO L93 Difference]: Finished difference Result 929 states and 1458 transitions. [2022-07-22 18:03:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:05,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-22 18:03:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:05,360 INFO L225 Difference]: With dead ends: 929 [2022-07-22 18:03:05,360 INFO L226 Difference]: Without dead ends: 619 [2022-07-22 18:03:05,363 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:03:05,372 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 120 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:05,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 420 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-07-22 18:03:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2022-07-22 18:03:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.551948051948052) internal successors, (956), 616 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 956 transitions. [2022-07-22 18:03:05,453 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 956 transitions. Word has length 79 [2022-07-22 18:03:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:05,456 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 956 transitions. [2022-07-22 18:03:05,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 956 transitions. [2022-07-22 18:03:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 18:03:05,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:05,457 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:05,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:03:05,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2005690142, now seen corresponding path program 1 times [2022-07-22 18:03:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:05,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94035901] [2022-07-22 18:03:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94035901] [2022-07-22 18:03:05,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94035901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635973783] [2022-07-22 18:03:05,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,601 INFO L87 Difference]: Start difference. First operand 617 states and 956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:05,673 INFO L93 Difference]: Finished difference Result 1661 states and 2614 transitions. [2022-07-22 18:03:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-22 18:03:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:05,680 INFO L225 Difference]: With dead ends: 1661 [2022-07-22 18:03:05,680 INFO L226 Difference]: Without dead ends: 1091 [2022-07-22 18:03:05,681 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:03:05,682 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 115 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:05,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 411 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:05,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-22 18:03:05,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1089. [2022-07-22 18:03:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 1.5588235294117647) internal successors, (1696), 1088 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1696 transitions. [2022-07-22 18:03:05,778 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1696 transitions. Word has length 80 [2022-07-22 18:03:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:05,778 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1696 transitions. [2022-07-22 18:03:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1696 transitions. [2022-07-22 18:03:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 18:03:05,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:05,783 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:05,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:03:05,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:05,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1850213230, now seen corresponding path program 1 times [2022-07-22 18:03:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478313709] [2022-07-22 18:03:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:05,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:05,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478313709] [2022-07-22 18:03:05,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478313709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:05,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:05,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503650894] [2022-07-22 18:03:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:05,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:05,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:05,907 INFO L87 Difference]: Start difference. First operand 1089 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:06,024 INFO L93 Difference]: Finished difference Result 2981 states and 4674 transitions. [2022-07-22 18:03:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-22 18:03:06,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:06,033 INFO L225 Difference]: With dead ends: 2981 [2022-07-22 18:03:06,033 INFO L226 Difference]: Without dead ends: 1939 [2022-07-22 18:03:06,035 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:03:06,036 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 110 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:06,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2022-07-22 18:03:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1937. [2022-07-22 18:03:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 1.5537190082644627) internal successors, (3008), 1936 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3008 transitions. [2022-07-22 18:03:06,130 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3008 transitions. Word has length 81 [2022-07-22 18:03:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:06,131 INFO L495 AbstractCegarLoop]: Abstraction has 1937 states and 3008 transitions. [2022-07-22 18:03:06,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3008 transitions. [2022-07-22 18:03:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-22 18:03:06,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:06,132 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:06,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:03:06,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1094060462, now seen corresponding path program 1 times [2022-07-22 18:03:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:06,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252031378] [2022-07-22 18:03:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:06,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252031378] [2022-07-22 18:03:06,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252031378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:06,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:06,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:03:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060044893] [2022-07-22 18:03:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:06,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:03:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:03:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:06,243 INFO L87 Difference]: Start difference. First operand 1937 states and 3008 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:07,443 INFO L93 Difference]: Finished difference Result 15167 states and 23735 transitions. [2022-07-22 18:03:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:03:07,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-07-22 18:03:07,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:07,551 INFO L225 Difference]: With dead ends: 15167 [2022-07-22 18:03:07,551 INFO L226 Difference]: Without dead ends: 13277 [2022-07-22 18:03:07,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:03:07,562 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1946 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:07,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 2529 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2022-07-22 18:03:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 3825. [2022-07-22 18:03:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3824 states have (on average 1.5439330543933054) internal successors, (5904), 3824 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5904 transitions. [2022-07-22 18:03:08,279 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5904 transitions. Word has length 82 [2022-07-22 18:03:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:08,280 INFO L495 AbstractCegarLoop]: Abstraction has 3825 states and 5904 transitions. [2022-07-22 18:03:08,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5904 transitions. [2022-07-22 18:03:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 18:03:08,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:08,282 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:03:08,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -827187160, now seen corresponding path program 1 times [2022-07-22 18:03:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:08,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776623621] [2022-07-22 18:03:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:08,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:08,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776623621] [2022-07-22 18:03:08,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776623621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:08,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:08,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:03:08,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105666660] [2022-07-22 18:03:08,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:08,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:03:08,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:03:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:08,511 INFO L87 Difference]: Start difference. First operand 3825 states and 5904 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:10,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:10,174 INFO L93 Difference]: Finished difference Result 24093 states and 36886 transitions. [2022-07-22 18:03:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:03:10,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-07-22 18:03:10,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:10,246 INFO L225 Difference]: With dead ends: 24093 [2022-07-22 18:03:10,246 INFO L226 Difference]: Without dead ends: 20315 [2022-07-22 18:03:10,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:10,257 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1039 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:10,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1092 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20315 states. [2022-07-22 18:03:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20315 to 20305. [2022-07-22 18:03:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20305 states, 20304 states have (on average 1.524822695035461) internal successors, (30960), 20304 states have internal predecessors, (30960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20305 states to 20305 states and 30960 transitions. [2022-07-22 18:03:11,966 INFO L78 Accepts]: Start accepts. Automaton has 20305 states and 30960 transitions. Word has length 83 [2022-07-22 18:03:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:11,967 INFO L495 AbstractCegarLoop]: Abstraction has 20305 states and 30960 transitions. [2022-07-22 18:03:11,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20305 states and 30960 transitions. [2022-07-22 18:03:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 18:03:11,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:11,969 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:11,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:03:11,971 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1388927858, now seen corresponding path program 1 times [2022-07-22 18:03:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:11,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361894118] [2022-07-22 18:03:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:12,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:12,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361894118] [2022-07-22 18:03:12,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361894118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:12,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:12,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:12,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973140008] [2022-07-22 18:03:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:12,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:12,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:12,016 INFO L87 Difference]: Start difference. First operand 20305 states and 30960 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:14,278 INFO L93 Difference]: Finished difference Result 57365 states and 87026 transitions. [2022-07-22 18:03:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-07-22 18:03:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:14,364 INFO L225 Difference]: With dead ends: 57365 [2022-07-22 18:03:14,365 INFO L226 Difference]: Without dead ends: 37107 [2022-07-22 18:03:14,394 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:03:14,395 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 134 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:14,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 462 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37107 states. [2022-07-22 18:03:16,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37107 to 37105. [2022-07-22 18:03:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37105 states, 37104 states have (on average 1.5019404915912031) internal successors, (55728), 37104 states have internal predecessors, (55728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37105 states to 37105 states and 55728 transitions. [2022-07-22 18:03:16,922 INFO L78 Accepts]: Start accepts. Automaton has 37105 states and 55728 transitions. Word has length 83 [2022-07-22 18:03:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:16,922 INFO L495 AbstractCegarLoop]: Abstraction has 37105 states and 55728 transitions. [2022-07-22 18:03:16,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 37105 states and 55728 transitions. [2022-07-22 18:03:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 18:03:16,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:16,924 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:16,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:03:16,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1504349213, now seen corresponding path program 1 times [2022-07-22 18:03:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:16,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743114093] [2022-07-22 18:03:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:16,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:17,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:17,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743114093] [2022-07-22 18:03:17,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743114093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:17,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:17,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:03:17,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916483488] [2022-07-22 18:03:17,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:17,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:03:17,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:17,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:03:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:03:17,044 INFO L87 Difference]: Start difference. First operand 37105 states and 55728 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:23,268 INFO L93 Difference]: Finished difference Result 77235 states and 114481 transitions. [2022-07-22 18:03:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:03:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-22 18:03:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:23,726 INFO L225 Difference]: With dead ends: 77235 [2022-07-22 18:03:23,726 INFO L226 Difference]: Without dead ends: 77233 [2022-07-22 18:03:23,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:03:23,828 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 417 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:23,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 841 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77233 states. [2022-07-22 18:03:27,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77233 to 39409. [2022-07-22 18:03:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39409 states, 39408 states have (on average 1.4725943970767357) internal successors, (58032), 39408 states have internal predecessors, (58032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39409 states to 39409 states and 58032 transitions. [2022-07-22 18:03:28,095 INFO L78 Accepts]: Start accepts. Automaton has 39409 states and 58032 transitions. Word has length 84 [2022-07-22 18:03:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:28,096 INFO L495 AbstractCegarLoop]: Abstraction has 39409 states and 58032 transitions. [2022-07-22 18:03:28,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 39409 states and 58032 transitions. [2022-07-22 18:03:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-22 18:03:28,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:28,098 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:03:28,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:03:28,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash 662393451, now seen corresponding path program 1 times [2022-07-22 18:03:28,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:28,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411323210] [2022-07-22 18:03:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:28,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:03:28,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:28,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411323210] [2022-07-22 18:03:28,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411323210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:03:28,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:03:28,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:03:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004474668] [2022-07-22 18:03:28,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:03:28,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:03:28,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:28,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:03:28,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:03:28,151 INFO L87 Difference]: Start difference. First operand 39409 states and 58032 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:32,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:32,415 INFO L93 Difference]: Finished difference Result 95831 states and 141140 transitions. [2022-07-22 18:03:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:03:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-22 18:03:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:32,627 INFO L225 Difference]: With dead ends: 95831 [2022-07-22 18:03:32,627 INFO L226 Difference]: Without dead ends: 56469 [2022-07-22 18:03:32,691 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:03:32,692 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 101 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:32,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 336 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:03:32,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56469 states. [2022-07-22 18:03:37,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56469 to 56467. [2022-07-22 18:03:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56467 states, 56466 states have (on average 1.4664045620373323) internal successors, (82802), 56466 states have internal predecessors, (82802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56467 states to 56467 states and 82802 transitions. [2022-07-22 18:03:37,269 INFO L78 Accepts]: Start accepts. Automaton has 56467 states and 82802 transitions. Word has length 85 [2022-07-22 18:03:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:03:37,269 INFO L495 AbstractCegarLoop]: Abstraction has 56467 states and 82802 transitions. [2022-07-22 18:03:37,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 56467 states and 82802 transitions. [2022-07-22 18:03:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 18:03:37,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:03:37,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:03:37,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:03:37,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:03:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:03:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1460670259, now seen corresponding path program 1 times [2022-07-22 18:03:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:03:37,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999793301] [2022-07-22 18:03:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:03:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 18:03:37,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:03:37,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999793301] [2022-07-22 18:03:37,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999793301] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:03:37,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076329372] [2022-07-22 18:03:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:03:37,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:03:37,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:03:37,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 18:03:37,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 18:03:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:03:37,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 18:03:37,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:03:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 18:03:37,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:03:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 18:03:38,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076329372] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:03:38,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:03:38,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-07-22 18:03:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061249529] [2022-07-22 18:03:38,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:03:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:03:38,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:03:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:03:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:03:38,182 INFO L87 Difference]: Start difference. First operand 56467 states and 82802 transitions. Second operand has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:03:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:03:50,924 INFO L93 Difference]: Finished difference Result 213839 states and 315705 transitions. [2022-07-22 18:03:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:03:50,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 0 states have call successors, (0), 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 116 [2022-07-22 18:03:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:03:51,451 INFO L225 Difference]: With dead ends: 213839 [2022-07-22 18:03:51,452 INFO L226 Difference]: Without dead ends: 174477 [2022-07-22 18:03:51,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:03:51,587 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1348 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:03:51,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1700 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:03:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174477 states.