./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b13c8169fb5357220d29959d63393b66877a012797fdaa495805bf5299de8fb1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:22:28,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:22:28,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:22:28,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:22:28,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:22:28,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:22:28,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:22:28,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:22:28,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:22:28,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:22:28,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:22:28,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:22:28,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:22:28,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:22:28,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:22:28,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:22:28,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:22:28,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:22:28,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:22:28,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:22:28,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:22:28,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:22:28,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:22:28,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:22:28,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:22:28,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:22:28,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:22:28,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:22:28,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:22:28,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:22:28,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:22:28,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:22:28,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:22:28,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:22:28,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:22:28,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:22:28,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:22:28,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:22:28,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:22:28,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:22:28,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:22:28,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:22:28,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:22:28,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:22:28,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:22:28,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:22:28,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:22:28,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:22:28,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:22:28,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:22:28,607 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:22:28,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:22:28,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:22:28,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:22:28,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:22:28,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:22:28,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:22:28,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:22:28,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:22:28,609 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:22:28,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:22:28,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:22:28,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:22:28,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:22:28,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:22:28,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:22:28,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:22:28,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:22:28,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:22:28,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:22:28,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:22:28,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:22:28,612 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:22:28,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:22:28,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:22:28,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b13c8169fb5357220d29959d63393b66877a012797fdaa495805bf5299de8fb1 [2021-12-28 01:22:28,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:22:28,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:22:29,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:22:29,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:22:29,004 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:22:29,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-28 01:22:29,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c8a14bc/dca477f92ef7452b909391e9297d9588/FLAG7744dc8dd [2021-12-28 01:22:29,568 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:22:29,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-28 01:22:29,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c8a14bc/dca477f92ef7452b909391e9297d9588/FLAG7744dc8dd [2021-12-28 01:22:30,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c8a14bc/dca477f92ef7452b909391e9297d9588 [2021-12-28 01:22:30,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:22:30,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:22:30,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:22:30,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:22:30,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:22:30,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47496874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30, skipping insertion in model container [2021-12-28 01:22:30,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:22:30,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:22:30,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2021-12-28 01:22:30,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2021-12-28 01:22:30,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2021-12-28 01:22:30,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2021-12-28 01:22:30,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:22:30,606 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:22:30,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2021-12-28 01:22:30,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2021-12-28 01:22:30,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2021-12-28 01:22:30,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2021-12-28 01:22:30,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:22:30,773 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:22:30,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30 WrapperNode [2021-12-28 01:22:30,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:22:30,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:22:30,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:22:30,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:22:30,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,889 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2551 [2021-12-28 01:22:30,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:22:30,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:22:30,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:22:30,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:22:30,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:22:30,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:22:30,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:22:30,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:22:30,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (1/1) ... [2021-12-28 01:22:30,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:22:31,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:22:31,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 01:22:31,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 01:22:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:22:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:22:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:22:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:22:31,297 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:22:31,298 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:22:32,407 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:22:32,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:22:32,421 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:22:32,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:22:32 BoogieIcfgContainer [2021-12-28 01:22:32,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:22:32,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:22:32,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:22:32,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:22:32,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:22:30" (1/3) ... [2021-12-28 01:22:32,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9850b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:22:32, skipping insertion in model container [2021-12-28 01:22:32,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:30" (2/3) ... [2021-12-28 01:22:32,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9850b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:22:32, skipping insertion in model container [2021-12-28 01:22:32,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:22:32" (3/3) ... [2021-12-28 01:22:32,432 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-28 01:22:32,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:22:32,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-28 01:22:32,501 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:22:32,508 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 01:22:32,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 01:22:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 01:22:32,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:32,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:32,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:32,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:32,553 INFO L85 PathProgramCache]: Analyzing trace with hash 881754525, now seen corresponding path program 1 times [2021-12-28 01:22:32,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:32,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114201427] [2021-12-28 01:22:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:32,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:32,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:32,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114201427] [2021-12-28 01:22:32,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114201427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:32,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:32,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:32,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079709263] [2021-12-28 01:22:32,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:32,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:32,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:32,951 INFO L87 Difference]: Start difference. First operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:33,104 INFO L93 Difference]: Finished difference Result 690 states and 1215 transitions. [2021-12-28 01:22:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-12-28 01:22:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:33,126 INFO L225 Difference]: With dead ends: 690 [2021-12-28 01:22:33,126 INFO L226 Difference]: Without dead ends: 546 [2021-12-28 01:22:33,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:33,139 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 422 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:33,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1360 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-12-28 01:22:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2021-12-28 01:22:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 536 states have (on average 1.333955223880597) internal successors, (715), 539 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 715 transitions. [2021-12-28 01:22:33,206 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 715 transitions. Word has length 50 [2021-12-28 01:22:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:33,206 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 715 transitions. [2021-12-28 01:22:33,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 715 transitions. [2021-12-28 01:22:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 01:22:33,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:33,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:33,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:22:33,211 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash -88586633, now seen corresponding path program 1 times [2021-12-28 01:22:33,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:33,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647451221] [2021-12-28 01:22:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:33,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:33,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:33,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647451221] [2021-12-28 01:22:33,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647451221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:33,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:33,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:33,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225796601] [2021-12-28 01:22:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:33,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:33,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:33,297 INFO L87 Difference]: Start difference. First operand 540 states and 715 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:33,375 INFO L93 Difference]: Finished difference Result 955 states and 1317 transitions. [2021-12-28 01:22:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:33,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-12-28 01:22:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:33,379 INFO L225 Difference]: With dead ends: 955 [2021-12-28 01:22:33,379 INFO L226 Difference]: Without dead ends: 714 [2021-12-28 01:22:33,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:33,381 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 236 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:33,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1018 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-12-28 01:22:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 708. [2021-12-28 01:22:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 704 states have (on average 1.3536931818181819) internal successors, (953), 707 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 953 transitions. [2021-12-28 01:22:33,413 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 953 transitions. Word has length 50 [2021-12-28 01:22:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:33,414 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 953 transitions. [2021-12-28 01:22:33,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 953 transitions. [2021-12-28 01:22:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 01:22:33,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:33,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:33,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:22:33,417 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:33,418 INFO L85 PathProgramCache]: Analyzing trace with hash 301591798, now seen corresponding path program 1 times [2021-12-28 01:22:33,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:33,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361903433] [2021-12-28 01:22:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:33,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:33,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:33,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361903433] [2021-12-28 01:22:33,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361903433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:33,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:33,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:33,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991944469] [2021-12-28 01:22:33,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:33,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:33,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:33,500 INFO L87 Difference]: Start difference. First operand 708 states and 953 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:33,605 INFO L93 Difference]: Finished difference Result 1364 states and 1888 transitions. [2021-12-28 01:22:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:33,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-12-28 01:22:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:33,609 INFO L225 Difference]: With dead ends: 1364 [2021-12-28 01:22:33,609 INFO L226 Difference]: Without dead ends: 1035 [2021-12-28 01:22:33,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:33,611 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 297 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:33,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 994 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:22:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2021-12-28 01:22:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1028. [2021-12-28 01:22:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1024 states have (on average 1.3642578125) internal successors, (1397), 1027 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1397 transitions. [2021-12-28 01:22:33,654 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1397 transitions. Word has length 50 [2021-12-28 01:22:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:33,655 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 1397 transitions. [2021-12-28 01:22:33,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1397 transitions. [2021-12-28 01:22:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 01:22:33,657 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:33,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:33,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:22:33,657 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash 157307916, now seen corresponding path program 1 times [2021-12-28 01:22:33,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:33,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863343569] [2021-12-28 01:22:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:33,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:33,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:33,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863343569] [2021-12-28 01:22:33,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863343569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:33,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:33,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:22:33,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492812772] [2021-12-28 01:22:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:33,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:33,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:33,757 INFO L87 Difference]: Start difference. First operand 1028 states and 1397 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:34,136 INFO L93 Difference]: Finished difference Result 2117 states and 2920 transitions. [2021-12-28 01:22:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-12-28 01:22:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:34,149 INFO L225 Difference]: With dead ends: 2117 [2021-12-28 01:22:34,150 INFO L226 Difference]: Without dead ends: 1255 [2021-12-28 01:22:34,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:34,160 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1684 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:34,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 399 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:22:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-12-28 01:22:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1245. [2021-12-28 01:22:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1241 states have (on average 1.3738920225624496) internal successors, (1705), 1244 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1705 transitions. [2021-12-28 01:22:34,235 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1705 transitions. Word has length 50 [2021-12-28 01:22:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1705 transitions. [2021-12-28 01:22:34,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1705 transitions. [2021-12-28 01:22:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:22:34,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:34,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:34,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:22:34,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1701829494, now seen corresponding path program 1 times [2021-12-28 01:22:34,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:34,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348582059] [2021-12-28 01:22:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:34,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:34,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:34,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348582059] [2021-12-28 01:22:34,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348582059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:34,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:34,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:22:34,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603440098] [2021-12-28 01:22:34,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:34,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:34,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:34,349 INFO L87 Difference]: Start difference. First operand 1245 states and 1705 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:34,717 INFO L93 Difference]: Finished difference Result 2643 states and 3662 transitions. [2021-12-28 01:22:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:34,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-28 01:22:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:34,723 INFO L225 Difference]: With dead ends: 2643 [2021-12-28 01:22:34,723 INFO L226 Difference]: Without dead ends: 1579 [2021-12-28 01:22:34,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:34,725 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 1436 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:34,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 342 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 01:22:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-12-28 01:22:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1177. [2021-12-28 01:22:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1173 states have (on average 1.3725490196078431) internal successors, (1610), 1176 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1610 transitions. [2021-12-28 01:22:34,850 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1610 transitions. Word has length 51 [2021-12-28 01:22:34,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:34,850 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1610 transitions. [2021-12-28 01:22:34,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1610 transitions. [2021-12-28 01:22:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:22:34,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:34,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:34,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:22:34,858 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1906241974, now seen corresponding path program 1 times [2021-12-28 01:22:34,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:34,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548790484] [2021-12-28 01:22:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:34,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:34,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:34,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548790484] [2021-12-28 01:22:34,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548790484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:34,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:34,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:22:34,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112181407] [2021-12-28 01:22:34,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:34,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:34,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:34,932 INFO L87 Difference]: Start difference. First operand 1177 states and 1610 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:35,247 INFO L93 Difference]: Finished difference Result 2592 states and 3567 transitions. [2021-12-28 01:22:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:35,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-28 01:22:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:35,257 INFO L225 Difference]: With dead ends: 2592 [2021-12-28 01:22:35,257 INFO L226 Difference]: Without dead ends: 1534 [2021-12-28 01:22:35,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:35,260 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1270 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:35,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 316 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 01:22:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2021-12-28 01:22:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1521. [2021-12-28 01:22:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1517 states have (on average 1.3645352669742914) internal successors, (2070), 1520 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2070 transitions. [2021-12-28 01:22:35,385 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2070 transitions. Word has length 51 [2021-12-28 01:22:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:35,386 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 2070 transitions. [2021-12-28 01:22:35,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2070 transitions. [2021-12-28 01:22:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 01:22:35,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:35,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:35,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:22:35,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1198562519, now seen corresponding path program 1 times [2021-12-28 01:22:35,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575796597] [2021-12-28 01:22:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:35,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:35,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:35,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575796597] [2021-12-28 01:22:35,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575796597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:35,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:35,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:22:35,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793648751] [2021-12-28 01:22:35,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:35,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:22:35,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:35,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:22:35,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:35,471 INFO L87 Difference]: Start difference. First operand 1521 states and 2070 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:36,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:36,281 INFO L93 Difference]: Finished difference Result 5054 states and 7046 transitions. [2021-12-28 01:22:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:22:36,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-28 01:22:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:36,298 INFO L225 Difference]: With dead ends: 5054 [2021-12-28 01:22:36,298 INFO L226 Difference]: Without dead ends: 4621 [2021-12-28 01:22:36,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-28 01:22:36,300 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 2998 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:36,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2998 Valid, 630 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:22:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2021-12-28 01:22:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 1533. [2021-12-28 01:22:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1529 states have (on average 1.3642903858731197) internal successors, (2086), 1532 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2086 transitions. [2021-12-28 01:22:36,477 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2086 transitions. Word has length 52 [2021-12-28 01:22:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:36,477 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 2086 transitions. [2021-12-28 01:22:36,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2086 transitions. [2021-12-28 01:22:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 01:22:36,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:36,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:36,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:22:36,480 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1743373944, now seen corresponding path program 1 times [2021-12-28 01:22:36,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:36,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089223777] [2021-12-28 01:22:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:36,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:36,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089223777] [2021-12-28 01:22:36,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089223777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:36,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:36,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:22:36,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845007581] [2021-12-28 01:22:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:36,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:22:36,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:22:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:36,557 INFO L87 Difference]: Start difference. First operand 1533 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:37,433 INFO L93 Difference]: Finished difference Result 4964 states and 6883 transitions. [2021-12-28 01:22:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:22:37,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-28 01:22:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:37,448 INFO L225 Difference]: With dead ends: 4964 [2021-12-28 01:22:37,448 INFO L226 Difference]: Without dead ends: 4243 [2021-12-28 01:22:37,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-28 01:22:37,450 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 2507 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:37,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2507 Valid, 585 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:22:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2021-12-28 01:22:37,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 1547. [2021-12-28 01:22:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1543 states have (on average 1.3635774465327284) internal successors, (2104), 1546 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2104 transitions. [2021-12-28 01:22:37,657 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2104 transitions. Word has length 53 [2021-12-28 01:22:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:37,657 INFO L470 AbstractCegarLoop]: Abstraction has 1547 states and 2104 transitions. [2021-12-28 01:22:37,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2104 transitions. [2021-12-28 01:22:37,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 01:22:37,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:37,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:37,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:22:37,660 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:37,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1359815673, now seen corresponding path program 1 times [2021-12-28 01:22:37,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:37,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369893447] [2021-12-28 01:22:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:37,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:37,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:37,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369893447] [2021-12-28 01:22:37,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369893447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:37,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:37,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:22:37,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285699021] [2021-12-28 01:22:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:37,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:22:37,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:22:37,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:37,722 INFO L87 Difference]: Start difference. First operand 1547 states and 2104 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:38,845 INFO L93 Difference]: Finished difference Result 5348 states and 7493 transitions. [2021-12-28 01:22:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:22:38,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-28 01:22:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:38,862 INFO L225 Difference]: With dead ends: 5348 [2021-12-28 01:22:38,862 INFO L226 Difference]: Without dead ends: 4798 [2021-12-28 01:22:38,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-28 01:22:38,865 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1890 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:38,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 719 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:22:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2021-12-28 01:22:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 1569. [2021-12-28 01:22:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1565 states have (on average 1.3642172523961662) internal successors, (2135), 1568 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2135 transitions. [2021-12-28 01:22:39,110 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2135 transitions. Word has length 53 [2021-12-28 01:22:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:39,110 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2135 transitions. [2021-12-28 01:22:39,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2135 transitions. [2021-12-28 01:22:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 01:22:39,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:39,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:39,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:22:39,113 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:39,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1681497036, now seen corresponding path program 1 times [2021-12-28 01:22:39,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:39,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847166416] [2021-12-28 01:22:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:39,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:39,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:39,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847166416] [2021-12-28 01:22:39,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847166416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:39,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:39,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:22:39,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486566267] [2021-12-28 01:22:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:39,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 01:22:39,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:39,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 01:22:39,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:22:39,226 INFO L87 Difference]: Start difference. First operand 1569 states and 2135 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:40,103 INFO L93 Difference]: Finished difference Result 4021 states and 5564 transitions. [2021-12-28 01:22:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 01:22:40,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-28 01:22:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:40,113 INFO L225 Difference]: With dead ends: 4021 [2021-12-28 01:22:40,114 INFO L226 Difference]: Without dead ends: 2971 [2021-12-28 01:22:40,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-28 01:22:40,116 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 2239 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:40,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2239 Valid, 872 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:22:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-12-28 01:22:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1569. [2021-12-28 01:22:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1565 states have (on average 1.3610223642172523) internal successors, (2130), 1568 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2130 transitions. [2021-12-28 01:22:40,354 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2130 transitions. Word has length 54 [2021-12-28 01:22:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:40,354 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2130 transitions. [2021-12-28 01:22:40,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2130 transitions. [2021-12-28 01:22:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 01:22:40,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:40,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:40,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:22:40,357 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash 711155878, now seen corresponding path program 1 times [2021-12-28 01:22:40,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558134839] [2021-12-28 01:22:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:40,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:40,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:40,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558134839] [2021-12-28 01:22:40,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558134839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:40,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:40,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:22:40,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222766238] [2021-12-28 01:22:40,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:40,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 01:22:40,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 01:22:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:22:40,473 INFO L87 Difference]: Start difference. First operand 1569 states and 2130 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:41,775 INFO L93 Difference]: Finished difference Result 5297 states and 7432 transitions. [2021-12-28 01:22:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:22:41,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-28 01:22:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:41,789 INFO L225 Difference]: With dead ends: 5297 [2021-12-28 01:22:41,790 INFO L226 Difference]: Without dead ends: 4375 [2021-12-28 01:22:41,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-28 01:22:41,793 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1979 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:41,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1979 Valid, 1496 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:22:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-12-28 01:22:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 1540. [2021-12-28 01:22:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1536 states have (on average 1.3600260416666667) internal successors, (2089), 1539 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2089 transitions. [2021-12-28 01:22:42,051 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2089 transitions. Word has length 54 [2021-12-28 01:22:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:42,052 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2089 transitions. [2021-12-28 01:22:42,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2089 transitions. [2021-12-28 01:22:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 01:22:42,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:42,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:42,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:22:42,054 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -839465653, now seen corresponding path program 1 times [2021-12-28 01:22:42,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:42,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935015328] [2021-12-28 01:22:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:42,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:42,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:42,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935015328] [2021-12-28 01:22:42,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935015328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:42,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:42,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:22:42,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655632357] [2021-12-28 01:22:42,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:42,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 01:22:42,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 01:22:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:22:42,164 INFO L87 Difference]: Start difference. First operand 1540 states and 2089 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:43,236 INFO L93 Difference]: Finished difference Result 3568 states and 4963 transitions. [2021-12-28 01:22:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:22:43,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-28 01:22:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:43,244 INFO L225 Difference]: With dead ends: 3568 [2021-12-28 01:22:43,244 INFO L226 Difference]: Without dead ends: 3563 [2021-12-28 01:22:43,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-28 01:22:43,245 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 1641 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:43,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 1163 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:22:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2021-12-28 01:22:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 1540. [2021-12-28 01:22:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1536 states have (on average 1.3587239583333333) internal successors, (2087), 1539 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2087 transitions. [2021-12-28 01:22:43,460 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2087 transitions. Word has length 54 [2021-12-28 01:22:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:43,460 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2087 transitions. [2021-12-28 01:22:43,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2087 transitions. [2021-12-28 01:22:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 01:22:43,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:43,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:43,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 01:22:43,463 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:43,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1126690749, now seen corresponding path program 1 times [2021-12-28 01:22:43,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:43,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008097904] [2021-12-28 01:22:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:43,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:43,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:43,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008097904] [2021-12-28 01:22:43,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008097904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:43,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:43,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:43,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920183950] [2021-12-28 01:22:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:43,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:43,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:43,506 INFO L87 Difference]: Start difference. First operand 1540 states and 2087 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:43,727 INFO L93 Difference]: Finished difference Result 2068 states and 2797 transitions. [2021-12-28 01:22:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-28 01:22:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:43,732 INFO L225 Difference]: With dead ends: 2068 [2021-12-28 01:22:43,735 INFO L226 Difference]: Without dead ends: 1509 [2021-12-28 01:22:43,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:43,736 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 257 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:43,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 673 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-12-28 01:22:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1507. [2021-12-28 01:22:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3293413173652695) internal successors, (1998), 1506 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1998 transitions. [2021-12-28 01:22:43,916 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1998 transitions. Word has length 55 [2021-12-28 01:22:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:43,916 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1998 transitions. [2021-12-28 01:22:43,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1998 transitions. [2021-12-28 01:22:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 01:22:43,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:43,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:43,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 01:22:43,919 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:43,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1317678866, now seen corresponding path program 1 times [2021-12-28 01:22:43,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:43,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208934223] [2021-12-28 01:22:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:43,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:43,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:43,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208934223] [2021-12-28 01:22:43,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208934223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:43,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:43,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:43,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608731754] [2021-12-28 01:22:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:43,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:43,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:43,956 INFO L87 Difference]: Start difference. First operand 1507 states and 1998 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:44,190 INFO L93 Difference]: Finished difference Result 2127 states and 2843 transitions. [2021-12-28 01:22:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:44,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-28 01:22:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:44,193 INFO L225 Difference]: With dead ends: 2127 [2021-12-28 01:22:44,193 INFO L226 Difference]: Without dead ends: 1514 [2021-12-28 01:22:44,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:44,195 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 206 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:44,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 744 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-12-28 01:22:44,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1507. [2021-12-28 01:22:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3140385894876914) internal successors, (1975), 1506 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1975 transitions. [2021-12-28 01:22:44,408 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1975 transitions. Word has length 55 [2021-12-28 01:22:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:44,409 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1975 transitions. [2021-12-28 01:22:44,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1975 transitions. [2021-12-28 01:22:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 01:22:44,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:44,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:44,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 01:22:44,411 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:44,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:44,412 INFO L85 PathProgramCache]: Analyzing trace with hash -944081870, now seen corresponding path program 1 times [2021-12-28 01:22:44,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:44,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035340893] [2021-12-28 01:22:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:44,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:44,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:44,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035340893] [2021-12-28 01:22:44,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035340893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:44,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:44,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:44,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875488052] [2021-12-28 01:22:44,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:44,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:44,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:44,449 INFO L87 Difference]: Start difference. First operand 1507 states and 1975 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:44,715 INFO L93 Difference]: Finished difference Result 2164 states and 2861 transitions. [2021-12-28 01:22:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:44,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-28 01:22:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:44,718 INFO L225 Difference]: With dead ends: 2164 [2021-12-28 01:22:44,718 INFO L226 Difference]: Without dead ends: 1513 [2021-12-28 01:22:44,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:44,720 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 222 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:44,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 745 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-12-28 01:22:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1507. [2021-12-28 01:22:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3020625415834997) internal successors, (1957), 1506 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1957 transitions. [2021-12-28 01:22:45,024 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1957 transitions. Word has length 55 [2021-12-28 01:22:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:45,025 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1957 transitions. [2021-12-28 01:22:45,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1957 transitions. [2021-12-28 01:22:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:45,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:45,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:45,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 01:22:45,027 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash -599519829, now seen corresponding path program 1 times [2021-12-28 01:22:45,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:45,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425932401] [2021-12-28 01:22:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:45,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:45,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:45,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425932401] [2021-12-28 01:22:45,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425932401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:45,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:45,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:45,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88954725] [2021-12-28 01:22:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:45,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:45,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:45,074 INFO L87 Difference]: Start difference. First operand 1507 states and 1957 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:45,433 INFO L93 Difference]: Finished difference Result 2638 states and 3459 transitions. [2021-12-28 01:22:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-28 01:22:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:45,436 INFO L225 Difference]: With dead ends: 2638 [2021-12-28 01:22:45,436 INFO L226 Difference]: Without dead ends: 1786 [2021-12-28 01:22:45,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:45,437 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 280 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:45,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 420 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:22:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-12-28 01:22:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1397. [2021-12-28 01:22:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1393 states have (on average 1.3058147882268485) internal successors, (1819), 1396 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1819 transitions. [2021-12-28 01:22:45,642 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1819 transitions. Word has length 57 [2021-12-28 01:22:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:45,642 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 1819 transitions. [2021-12-28 01:22:45,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1819 transitions. [2021-12-28 01:22:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:45,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:45,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:45,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 01:22:45,645 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -953719962, now seen corresponding path program 1 times [2021-12-28 01:22:45,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:45,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117965158] [2021-12-28 01:22:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:45,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:45,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:45,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117965158] [2021-12-28 01:22:45,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117965158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:45,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:45,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 01:22:45,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151902842] [2021-12-28 01:22:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:45,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 01:22:45,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 01:22:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 01:22:45,927 INFO L87 Difference]: Start difference. First operand 1397 states and 1819 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:47,158 INFO L93 Difference]: Finished difference Result 3372 states and 4492 transitions. [2021-12-28 01:22:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:22:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-28 01:22:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:47,163 INFO L225 Difference]: With dead ends: 3372 [2021-12-28 01:22:47,163 INFO L226 Difference]: Without dead ends: 3166 [2021-12-28 01:22:47,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-28 01:22:47,164 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1957 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:47,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 3295 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:22:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2021-12-28 01:22:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 1372. [2021-12-28 01:22:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1369 states have (on average 1.3067932797662527) internal successors, (1789), 1371 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1789 transitions. [2021-12-28 01:22:47,423 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1789 transitions. Word has length 57 [2021-12-28 01:22:47,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:47,423 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 1789 transitions. [2021-12-28 01:22:47,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1789 transitions. [2021-12-28 01:22:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:47,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:47,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:47,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 01:22:47,424 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:47,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1381909423, now seen corresponding path program 1 times [2021-12-28 01:22:47,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:47,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710821573] [2021-12-28 01:22:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:47,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:47,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:47,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710821573] [2021-12-28 01:22:47,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710821573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:47,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:47,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 01:22:47,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282899975] [2021-12-28 01:22:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:47,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 01:22:47,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 01:22:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 01:22:47,689 INFO L87 Difference]: Start difference. First operand 1372 states and 1789 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:48,974 INFO L93 Difference]: Finished difference Result 2693 states and 3578 transitions. [2021-12-28 01:22:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:22:48,975 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-28 01:22:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:48,979 INFO L225 Difference]: With dead ends: 2693 [2021-12-28 01:22:48,980 INFO L226 Difference]: Without dead ends: 2632 [2021-12-28 01:22:48,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-28 01:22:48,981 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 2041 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:48,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 2403 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:22:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-12-28 01:22:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 1360. [2021-12-28 01:22:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.3070692194403535) internal successors, (1775), 1359 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1775 transitions. [2021-12-28 01:22:49,277 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1775 transitions. Word has length 57 [2021-12-28 01:22:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:49,277 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1775 transitions. [2021-12-28 01:22:49,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1775 transitions. [2021-12-28 01:22:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:49,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:49,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:49,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 01:22:49,279 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:49,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1918440678, now seen corresponding path program 1 times [2021-12-28 01:22:49,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:49,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345345751] [2021-12-28 01:22:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:49,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:49,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:49,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345345751] [2021-12-28 01:22:49,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345345751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:49,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:49,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 01:22:49,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856324262] [2021-12-28 01:22:49,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:49,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 01:22:49,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 01:22:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:22:49,490 INFO L87 Difference]: Start difference. First operand 1360 states and 1775 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:50,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:50,993 INFO L93 Difference]: Finished difference Result 3691 states and 4925 transitions. [2021-12-28 01:22:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 01:22:50,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-28 01:22:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:51,000 INFO L225 Difference]: With dead ends: 3691 [2021-12-28 01:22:51,000 INFO L226 Difference]: Without dead ends: 3477 [2021-12-28 01:22:51,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-12-28 01:22:51,003 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2650 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:51,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2650 Valid, 2002 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:22:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-12-28 01:22:51,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 1309. [2021-12-28 01:22:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 1.3096330275229358) internal successors, (1713), 1308 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1713 transitions. [2021-12-28 01:22:51,333 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1713 transitions. Word has length 57 [2021-12-28 01:22:51,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:51,334 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 1713 transitions. [2021-12-28 01:22:51,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1713 transitions. [2021-12-28 01:22:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 01:22:51,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:51,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:51,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 01:22:51,337 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2109512119, now seen corresponding path program 1 times [2021-12-28 01:22:51,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:51,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036274430] [2021-12-28 01:22:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:51,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:51,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:51,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036274430] [2021-12-28 01:22:51,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036274430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:51,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:51,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:22:51,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649015576] [2021-12-28 01:22:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:51,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:51,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:51,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:51,386 INFO L87 Difference]: Start difference. First operand 1309 states and 1713 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:51,995 INFO L93 Difference]: Finished difference Result 3040 states and 4113 transitions. [2021-12-28 01:22:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:51,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-28 01:22:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:52,000 INFO L225 Difference]: With dead ends: 3040 [2021-12-28 01:22:52,000 INFO L226 Difference]: Without dead ends: 2306 [2021-12-28 01:22:52,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:52,002 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 966 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:52,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 589 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-12-28 01:22:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1981. [2021-12-28 01:22:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1980 states have (on average 1.3156565656565657) internal successors, (2605), 1980 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2605 transitions. [2021-12-28 01:22:52,482 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2605 transitions. Word has length 66 [2021-12-28 01:22:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:52,482 INFO L470 AbstractCegarLoop]: Abstraction has 1981 states and 2605 transitions. [2021-12-28 01:22:52,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2605 transitions. [2021-12-28 01:22:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 01:22:52,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:52,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:52,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 01:22:52,486 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1089617976, now seen corresponding path program 1 times [2021-12-28 01:22:52,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:52,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991252191] [2021-12-28 01:22:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:52,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:52,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:52,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991252191] [2021-12-28 01:22:52,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991252191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:52,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:52,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:22:52,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704523556] [2021-12-28 01:22:52,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:52,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:52,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:52,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:52,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:52,541 INFO L87 Difference]: Start difference. First operand 1981 states and 2605 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:53,141 INFO L93 Difference]: Finished difference Result 1987 states and 2608 transitions. [2021-12-28 01:22:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:53,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-28 01:22:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:53,145 INFO L225 Difference]: With dead ends: 1987 [2021-12-28 01:22:53,145 INFO L226 Difference]: Without dead ends: 1764 [2021-12-28 01:22:53,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:53,146 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 626 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:53,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 687 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:22:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-12-28 01:22:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1760. [2021-12-28 01:22:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 1.3200682205798748) internal successors, (2322), 1759 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2322 transitions. [2021-12-28 01:22:53,650 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2322 transitions. Word has length 67 [2021-12-28 01:22:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:53,651 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2322 transitions. [2021-12-28 01:22:53,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2322 transitions. [2021-12-28 01:22:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 01:22:53,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:53,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:53,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 01:22:53,654 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1950278783, now seen corresponding path program 1 times [2021-12-28 01:22:53,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:53,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555889445] [2021-12-28 01:22:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:53,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:53,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:53,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555889445] [2021-12-28 01:22:53,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555889445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:53,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:53,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:53,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404002492] [2021-12-28 01:22:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:53,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:53,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:53,711 INFO L87 Difference]: Start difference. First operand 1760 states and 2322 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:54,495 INFO L93 Difference]: Finished difference Result 4016 states and 5396 transitions. [2021-12-28 01:22:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-28 01:22:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:54,501 INFO L225 Difference]: With dead ends: 4016 [2021-12-28 01:22:54,501 INFO L226 Difference]: Without dead ends: 2722 [2021-12-28 01:22:54,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:54,504 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 104 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:54,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 520 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2021-12-28 01:22:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2592. [2021-12-28 01:22:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2591 states have (on average 1.3207255885758395) internal successors, (3422), 2591 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3422 transitions. [2021-12-28 01:22:55,325 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3422 transitions. Word has length 68 [2021-12-28 01:22:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:55,325 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 3422 transitions. [2021-12-28 01:22:55,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3422 transitions. [2021-12-28 01:22:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 01:22:55,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:55,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:55,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-28 01:22:55,328 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 427404410, now seen corresponding path program 1 times [2021-12-28 01:22:55,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:55,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003374081] [2021-12-28 01:22:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:55,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:55,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:55,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003374081] [2021-12-28 01:22:55,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003374081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:55,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:55,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:55,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21690251] [2021-12-28 01:22:55,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:55,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:55,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:55,390 INFO L87 Difference]: Start difference. First operand 2592 states and 3422 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:56,592 INFO L93 Difference]: Finished difference Result 6604 states and 8876 transitions. [2021-12-28 01:22:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:56,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-28 01:22:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:56,600 INFO L225 Difference]: With dead ends: 6604 [2021-12-28 01:22:56,600 INFO L226 Difference]: Without dead ends: 4498 [2021-12-28 01:22:56,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:56,603 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 94 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:56,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 507 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:56,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2021-12-28 01:22:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4128. [2021-12-28 01:22:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 4127 states have (on average 1.3249333656409015) internal successors, (5468), 4127 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 5468 transitions. [2021-12-28 01:22:57,708 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 5468 transitions. Word has length 68 [2021-12-28 01:22:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:57,709 INFO L470 AbstractCegarLoop]: Abstraction has 4128 states and 5468 transitions. [2021-12-28 01:22:57,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 5468 transitions. [2021-12-28 01:22:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:22:57,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:57,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:57,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-28 01:22:57,710 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357008, now seen corresponding path program 1 times [2021-12-28 01:22:57,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:57,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648024227] [2021-12-28 01:22:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:57,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:57,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:57,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648024227] [2021-12-28 01:22:57,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648024227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:57,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:57,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:57,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166843502] [2021-12-28 01:22:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:57,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:57,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:57,752 INFO L87 Difference]: Start difference. First operand 4128 states and 5468 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:00,013 INFO L93 Difference]: Finished difference Result 11012 states and 14710 transitions. [2021-12-28 01:23:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:00,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-28 01:23:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:00,022 INFO L225 Difference]: With dead ends: 11012 [2021-12-28 01:23:00,022 INFO L226 Difference]: Without dead ends: 7370 [2021-12-28 01:23:00,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:00,025 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 81 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:00,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 491 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2021-12-28 01:23:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 6760. [2021-12-28 01:23:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 6759 states have (on average 1.3197218523450214) internal successors, (8920), 6759 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 8920 transitions. [2021-12-28 01:23:01,905 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 8920 transitions. Word has length 70 [2021-12-28 01:23:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:01,906 INFO L470 AbstractCegarLoop]: Abstraction has 6760 states and 8920 transitions. [2021-12-28 01:23:01,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 8920 transitions. [2021-12-28 01:23:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 01:23:01,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:01,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:01,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-28 01:23:01,908 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:23:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2105959165, now seen corresponding path program 1 times [2021-12-28 01:23:01,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:01,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621029780] [2021-12-28 01:23:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:01,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:01,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:01,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621029780] [2021-12-28 01:23:01,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621029780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:01,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:01,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:23:01,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913028978] [2021-12-28 01:23:01,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:01,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:23:01,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:23:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:23:01,984 INFO L87 Difference]: Start difference. First operand 6760 states and 8920 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:06,545 INFO L93 Difference]: Finished difference Result 14374 states and 18731 transitions. [2021-12-28 01:23:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 01:23:06,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-28 01:23:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:06,558 INFO L225 Difference]: With dead ends: 14374 [2021-12-28 01:23:06,558 INFO L226 Difference]: Without dead ends: 14372 [2021-12-28 01:23:06,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:23:06,561 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 311 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:06,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 1214 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2021-12-28 01:23:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 7432. [2021-12-28 01:23:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 7431 states have (on average 1.290808774054636) internal successors, (9592), 7431 states have internal predecessors, (9592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 9592 transitions. [2021-12-28 01:23:08,823 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 9592 transitions. Word has length 72 [2021-12-28 01:23:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:08,825 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 9592 transitions. [2021-12-28 01:23:08,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 9592 transitions. [2021-12-28 01:23:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 01:23:08,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:08,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:08,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-28 01:23:08,828 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:23:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1422452613, now seen corresponding path program 1 times [2021-12-28 01:23:08,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:08,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002625916] [2021-12-28 01:23:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:08,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:08,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:08,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002625916] [2021-12-28 01:23:08,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002625916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:08,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:08,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:08,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962677653] [2021-12-28 01:23:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:08,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:08,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:08,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:08,864 INFO L87 Difference]: Start difference. First operand 7432 states and 9592 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:12,284 INFO L93 Difference]: Finished difference Result 17812 states and 22978 transitions. [2021-12-28 01:23:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:12,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-28 01:23:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:12,296 INFO L225 Difference]: With dead ends: 17812 [2021-12-28 01:23:12,296 INFO L226 Difference]: Without dead ends: 10866 [2021-12-28 01:23:12,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:12,302 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 176 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:12,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 353 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2021-12-28 01:23:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 10864. [2021-12-28 01:23:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10864 states, 10863 states have (on average 1.2718401914756512) internal successors, (13816), 10863 states have internal predecessors, (13816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10864 states to 10864 states and 13816 transitions. [2021-12-28 01:23:15,514 INFO L78 Accepts]: Start accepts. Automaton has 10864 states and 13816 transitions. Word has length 73 [2021-12-28 01:23:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:15,514 INFO L470 AbstractCegarLoop]: Abstraction has 10864 states and 13816 transitions. [2021-12-28 01:23:15,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 10864 states and 13816 transitions. [2021-12-28 01:23:15,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-28 01:23:15,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:15,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:23:15,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-28 01:23:15,516 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:23:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1415466240, now seen corresponding path program 1 times [2021-12-28 01:23:15,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:15,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772269565] [2021-12-28 01:23:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:15,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:15,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:15,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772269565] [2021-12-28 01:23:15,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772269565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:15,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:15,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:23:15,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278430319] [2021-12-28 01:23:15,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:15,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:15,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:15,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:15,567 INFO L87 Difference]: Start difference. First operand 10864 states and 13816 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:19,790 INFO L93 Difference]: Finished difference Result 16004 states and 20492 transitions. [2021-12-28 01:23:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:23:19,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-12-28 01:23:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:19,808 INFO L225 Difference]: With dead ends: 16004 [2021-12-28 01:23:19,809 INFO L226 Difference]: Without dead ends: 13638 [2021-12-28 01:23:19,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:23:19,813 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 582 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:19,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 732 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13638 states. [2021-12-28 01:23:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13638 to 12414. [2021-12-28 01:23:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12414 states, 12413 states have (on average 1.269636671231773) internal successors, (15760), 12413 states have internal predecessors, (15760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 15760 transitions. [2021-12-28 01:23:23,872 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 15760 transitions. Word has length 74 [2021-12-28 01:23:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:23,873 INFO L470 AbstractCegarLoop]: Abstraction has 12414 states and 15760 transitions. [2021-12-28 01:23:23,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 15760 transitions. [2021-12-28 01:23:23,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-28 01:23:23,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:23,878 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 01:23:23,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-28 01:23:23,878 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:23:23,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1725210313, now seen corresponding path program 1 times [2021-12-28 01:23:23,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:23,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712504656] [2021-12-28 01:23:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:23,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 01:23:23,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:23,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712504656] [2021-12-28 01:23:23,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712504656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:23,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:23,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:23:23,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795238816] [2021-12-28 01:23:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:23,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 01:23:23,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 01:23:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:23:23,994 INFO L87 Difference]: Start difference. First operand 12414 states and 15760 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:32,484 INFO L93 Difference]: Finished difference Result 30266 states and 38340 transitions. [2021-12-28 01:23:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:23:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-28 01:23:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:32,525 INFO L225 Difference]: With dead ends: 30266 [2021-12-28 01:23:32,525 INFO L226 Difference]: Without dead ends: 25024 [2021-12-28 01:23:32,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-28 01:23:32,536 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1671 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:32,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 841 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:23:32,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25024 states.