./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0521.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0521.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:52:06,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:52:06,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:52:06,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:52:06,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:52:06,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:52:06,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:52:06,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:52:06,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:52:06,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:52:06,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:52:06,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:52:06,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:52:06,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:52:06,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:52:06,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:52:06,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:52:06,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:52:06,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:52:06,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:52:06,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:52:06,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:52:06,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:52:06,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:52:06,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:52:06,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:52:06,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:52:06,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:52:06,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:52:06,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:52:06,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:52:06,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:52:06,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:52:06,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:52:06,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:52:06,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:52:06,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:52:06,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:52:06,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:52:06,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:52:06,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:52:06,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 05:52:06,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:52:06,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:52:06,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:52:06,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:52:06,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:52:06,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:52:06,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:52:06,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:52:06,809 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:52:06,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:52:06,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:52:06,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 05:52:06,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:52:06,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:52:06,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:52:06,811 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 05:52:06,811 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 05:52:06,811 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 05:52:06,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:52:06,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 05:52:06,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:52:06,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:52:06,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:52:06,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:52:06,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:52:06,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:52:06,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:52:06,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:52:06,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 05:52:06,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 05:52:06,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:52:06,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2021-12-16 05:52:07,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:52:07,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:52:07,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:52:07,069 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:52:07,070 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:52:07,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0521.i [2021-12-16 05:52:07,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00eccd36/4f43c81e0b9a46a28ab6a05de4cb4d70/FLAGf88b321fc [2021-12-16 05:52:07,613 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:52:07,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0521.i [2021-12-16 05:52:07,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00eccd36/4f43c81e0b9a46a28ab6a05de4cb4d70/FLAGf88b321fc [2021-12-16 05:52:08,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00eccd36/4f43c81e0b9a46a28ab6a05de4cb4d70 [2021-12-16 05:52:08,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:52:08,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:52:08,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:52:08,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:52:08,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:52:08,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264fa4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08, skipping insertion in model container [2021-12-16 05:52:08,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:52:08,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:52:08,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:52:08,487 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 05:52:08,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:52:08,560 INFO L208 MainTranslator]: Completed translation [2021-12-16 05:52:08,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08 WrapperNode [2021-12-16 05:52:08,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:52:08,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 05:52:08,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 05:52:08,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 05:52:08,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,635 INFO L137 Inliner]: procedures = 125, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 305 [2021-12-16 05:52:08,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 05:52:08,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 05:52:08,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 05:52:08,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 05:52:08,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 05:52:08,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 05:52:08,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 05:52:08,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 05:52:08,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (1/1) ... [2021-12-16 05:52:08,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:52:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:52:08,741 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) [2021-12-16 05:52:08,760 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 [2021-12-16 05:52:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 05:52:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 05:52:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 05:52:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 05:52:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 05:52:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 05:52:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 05:52:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 05:52:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 05:52:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 05:52:08,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 05:52:08,896 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 05:52:08,897 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 05:52:09,528 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 05:52:09,535 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 05:52:09,535 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-16 05:52:09,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:52:09 BoogieIcfgContainer [2021-12-16 05:52:09,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 05:52:09,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 05:52:09,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 05:52:09,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 05:52:09,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:52:08" (1/3) ... [2021-12-16 05:52:09,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663f2631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:52:09, skipping insertion in model container [2021-12-16 05:52:09,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:52:08" (2/3) ... [2021-12-16 05:52:09,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663f2631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:52:09, skipping insertion in model container [2021-12-16 05:52:09,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:52:09" (3/3) ... [2021-12-16 05:52:09,546 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0521.i [2021-12-16 05:52:09,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 05:52:09,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2021-12-16 05:52:09,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 05:52:09,601 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-16 05:52:09,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2021-12-16 05:52:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 160 states have (on average 2.1875) internal successors, (350), 312 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:09,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 05:52:09,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:09,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 05:52:09,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:09,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash 28729512, now seen corresponding path program 1 times [2021-12-16 05:52:09,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:09,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467260021] [2021-12-16 05:52:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:09,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:09,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:09,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467260021] [2021-12-16 05:52:09,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467260021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:09,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:09,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:09,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042027501] [2021-12-16 05:52:09,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:09,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 05:52:09,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 05:52:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 05:52:09,792 INFO L87 Difference]: Start difference. First operand has 313 states, 160 states have (on average 2.1875) internal successors, (350), 312 states have internal predecessors, (350), 0 states have call successors, (0), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:09,823 INFO L93 Difference]: Finished difference Result 313 states and 340 transitions. [2021-12-16 05:52:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 05:52:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-16 05:52:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:09,834 INFO L225 Difference]: With dead ends: 313 [2021-12-16 05:52:09,834 INFO L226 Difference]: Without dead ends: 311 [2021-12-16 05:52:09,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 05:52:09,838 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:09,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:52:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-12-16 05:52:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-12-16 05:52:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 159 states have (on average 2.1257861635220126) internal successors, (338), 310 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 338 transitions. [2021-12-16 05:52:09,879 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 338 transitions. Word has length 5 [2021-12-16 05:52:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:09,879 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 338 transitions. [2021-12-16 05:52:09,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 338 transitions. [2021-12-16 05:52:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 05:52:09,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:09,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 05:52:09,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 05:52:09,881 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash 889570248, now seen corresponding path program 1 times [2021-12-16 05:52:09,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:09,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933838086] [2021-12-16 05:52:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:09,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:09,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:09,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933838086] [2021-12-16 05:52:09,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933838086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:09,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:09,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:09,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993250994] [2021-12-16 05:52:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:09,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:09,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:09,950 INFO L87 Difference]: Start difference. First operand 311 states and 338 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:10,206 INFO L93 Difference]: Finished difference Result 295 states and 322 transitions. [2021-12-16 05:52:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:10,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-16 05:52:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:10,212 INFO L225 Difference]: With dead ends: 295 [2021-12-16 05:52:10,212 INFO L226 Difference]: Without dead ends: 295 [2021-12-16 05:52:10,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:10,218 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 77 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:10,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 406 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-16 05:52:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-12-16 05:52:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 159 states have (on average 2.0251572327044025) internal successors, (322), 294 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2021-12-16 05:52:10,236 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 6 [2021-12-16 05:52:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:10,237 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2021-12-16 05:52:10,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,237 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2021-12-16 05:52:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 05:52:10,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:10,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 05:52:10,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 05:52:10,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash 889570249, now seen corresponding path program 1 times [2021-12-16 05:52:10,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:10,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859644609] [2021-12-16 05:52:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:10,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:10,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:10,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859644609] [2021-12-16 05:52:10,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859644609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:10,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:10,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:10,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146185859] [2021-12-16 05:52:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:10,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:10,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:10,315 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:10,491 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2021-12-16 05:52:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:10,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-16 05:52:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:10,499 INFO L225 Difference]: With dead ends: 279 [2021-12-16 05:52:10,499 INFO L226 Difference]: Without dead ends: 279 [2021-12-16 05:52:10,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:10,505 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 61 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:10,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 415 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-16 05:52:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-12-16 05:52:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 159 states have (on average 1.9245283018867925) internal successors, (306), 278 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 306 transitions. [2021-12-16 05:52:10,527 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 306 transitions. Word has length 6 [2021-12-16 05:52:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:10,528 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 306 transitions. [2021-12-16 05:52:10,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 306 transitions. [2021-12-16 05:52:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 05:52:10,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:10,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 05:52:10,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 05:52:10,529 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2021-12-16 05:52:10,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:10,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311580361] [2021-12-16 05:52:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:10,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:10,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:10,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311580361] [2021-12-16 05:52:10,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311580361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:10,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:10,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:10,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498287100] [2021-12-16 05:52:10,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:10,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:10,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:10,571 INFO L87 Difference]: Start difference. First operand 279 states and 306 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:10,756 INFO L93 Difference]: Finished difference Result 334 states and 370 transitions. [2021-12-16 05:52:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:10,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-16 05:52:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:10,758 INFO L225 Difference]: With dead ends: 334 [2021-12-16 05:52:10,758 INFO L226 Difference]: Without dead ends: 334 [2021-12-16 05:52:10,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:10,760 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 76 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:10,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 481 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-16 05:52:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 277. [2021-12-16 05:52:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 159 states have (on average 1.9119496855345912) internal successors, (304), 276 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 304 transitions. [2021-12-16 05:52:10,768 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 304 transitions. Word has length 6 [2021-12-16 05:52:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:10,768 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 304 transitions. [2021-12-16 05:52:10,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 304 transitions. [2021-12-16 05:52:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 05:52:10,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:10,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 05:52:10,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 05:52:10,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 889571340, now seen corresponding path program 1 times [2021-12-16 05:52:10,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:10,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985084853] [2021-12-16 05:52:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:10,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:10,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:10,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985084853] [2021-12-16 05:52:10,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985084853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:10,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:10,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:10,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427729021] [2021-12-16 05:52:10,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:10,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:10,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:10,800 INFO L87 Difference]: Start difference. First operand 277 states and 304 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:11,035 INFO L93 Difference]: Finished difference Result 466 states and 515 transitions. [2021-12-16 05:52:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-16 05:52:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:11,037 INFO L225 Difference]: With dead ends: 466 [2021-12-16 05:52:11,037 INFO L226 Difference]: Without dead ends: 466 [2021-12-16 05:52:11,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:11,038 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 220 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:11,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 579 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-12-16 05:52:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 275. [2021-12-16 05:52:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 159 states have (on average 1.89937106918239) internal successors, (302), 274 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 302 transitions. [2021-12-16 05:52:11,047 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 302 transitions. Word has length 6 [2021-12-16 05:52:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:11,050 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 302 transitions. [2021-12-16 05:52:11,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 302 transitions. [2021-12-16 05:52:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 05:52:11,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:11,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:11,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 05:52:11,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 178517033, now seen corresponding path program 1 times [2021-12-16 05:52:11,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:11,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184833477] [2021-12-16 05:52:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:11,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:11,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:11,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184833477] [2021-12-16 05:52:11,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184833477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:11,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:11,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:52:11,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48320222] [2021-12-16 05:52:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:11,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:52:11,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:11,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:52:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:52:11,109 INFO L87 Difference]: Start difference. First operand 275 states and 302 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:11,167 INFO L93 Difference]: Finished difference Result 678 states and 747 transitions. [2021-12-16 05:52:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:52:11,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-12-16 05:52:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:11,171 INFO L225 Difference]: With dead ends: 678 [2021-12-16 05:52:11,171 INFO L226 Difference]: Without dead ends: 678 [2021-12-16 05:52:11,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:11,173 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 597 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:11,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 870 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:52:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-12-16 05:52:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 280. [2021-12-16 05:52:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 164 states have (on average 1.8780487804878048) internal successors, (308), 279 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 308 transitions. [2021-12-16 05:52:11,185 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 308 transitions. Word has length 8 [2021-12-16 05:52:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:11,185 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 308 transitions. [2021-12-16 05:52:11,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 308 transitions. [2021-12-16 05:52:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 05:52:11,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:11,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:11,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 05:52:11,187 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:11,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2119660206, now seen corresponding path program 1 times [2021-12-16 05:52:11,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:11,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226392184] [2021-12-16 05:52:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:11,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:11,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226392184] [2021-12-16 05:52:11,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226392184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:11,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:11,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:11,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723859671] [2021-12-16 05:52:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:11,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:11,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:11,258 INFO L87 Difference]: Start difference. First operand 280 states and 308 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:11,487 INFO L93 Difference]: Finished difference Result 330 states and 365 transitions. [2021-12-16 05:52:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:11,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-16 05:52:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:11,493 INFO L225 Difference]: With dead ends: 330 [2021-12-16 05:52:11,493 INFO L226 Difference]: Without dead ends: 330 [2021-12-16 05:52:11,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:11,493 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 72 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:11,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 476 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:11,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-16 05:52:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 278. [2021-12-16 05:52:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 164 states have (on average 1.8658536585365855) internal successors, (306), 277 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 306 transitions. [2021-12-16 05:52:11,499 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 306 transitions. Word has length 11 [2021-12-16 05:52:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 306 transitions. [2021-12-16 05:52:11,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 306 transitions. [2021-12-16 05:52:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 05:52:11,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:11,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:11,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 05:52:11,501 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2119660205, now seen corresponding path program 1 times [2021-12-16 05:52:11,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:11,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448724795] [2021-12-16 05:52:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:11,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:11,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:11,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448724795] [2021-12-16 05:52:11,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448724795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:11,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:11,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:11,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202515264] [2021-12-16 05:52:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:11,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:11,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:11,554 INFO L87 Difference]: Start difference. First operand 278 states and 306 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:11,777 INFO L93 Difference]: Finished difference Result 462 states and 510 transitions. [2021-12-16 05:52:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-16 05:52:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:11,779 INFO L225 Difference]: With dead ends: 462 [2021-12-16 05:52:11,779 INFO L226 Difference]: Without dead ends: 462 [2021-12-16 05:52:11,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:11,780 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 216 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:11,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 574 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-16 05:52:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 276. [2021-12-16 05:52:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 164 states have (on average 1.853658536585366) internal successors, (304), 275 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 304 transitions. [2021-12-16 05:52:11,786 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 304 transitions. Word has length 11 [2021-12-16 05:52:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:11,786 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 304 transitions. [2021-12-16 05:52:11,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 304 transitions. [2021-12-16 05:52:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:52:11,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:11,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:11,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 05:52:11,788 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:11,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:11,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1231388841, now seen corresponding path program 1 times [2021-12-16 05:52:11,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:11,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299663030] [2021-12-16 05:52:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:11,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:11,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299663030] [2021-12-16 05:52:11,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299663030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:11,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:11,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 05:52:11,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54490804] [2021-12-16 05:52:11,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:11,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:52:11,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:52:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:52:11,849 INFO L87 Difference]: Start difference. First operand 276 states and 304 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:12,048 INFO L93 Difference]: Finished difference Result 666 states and 735 transitions. [2021-12-16 05:52:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:52:12,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-12-16 05:52:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:12,051 INFO L225 Difference]: With dead ends: 666 [2021-12-16 05:52:12,051 INFO L226 Difference]: Without dead ends: 666 [2021-12-16 05:52:12,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:52:12,052 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 576 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:12,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 1363 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-16 05:52:12,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 279. [2021-12-16 05:52:12,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 167 states have (on average 1.8383233532934131) internal successors, (307), 278 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2021-12-16 05:52:12,059 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 13 [2021-12-16 05:52:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:12,059 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2021-12-16 05:52:12,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2021-12-16 05:52:12,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 05:52:12,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:12,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:12,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 05:52:12,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:12,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:12,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2035528525, now seen corresponding path program 1 times [2021-12-16 05:52:12,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:12,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582251817] [2021-12-16 05:52:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:12,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:12,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582251817] [2021-12-16 05:52:12,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582251817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:12,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:12,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:52:12,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517446668] [2021-12-16 05:52:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:12,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:12,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:12,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:12,107 INFO L87 Difference]: Start difference. First operand 279 states and 307 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:12,179 INFO L93 Difference]: Finished difference Result 408 states and 447 transitions. [2021-12-16 05:52:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:52:12,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-12-16 05:52:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:12,181 INFO L225 Difference]: With dead ends: 408 [2021-12-16 05:52:12,181 INFO L226 Difference]: Without dead ends: 408 [2021-12-16 05:52:12,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:52:12,183 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 237 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:12,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1120 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:52:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-16 05:52:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 343. [2021-12-16 05:52:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 231 states have (on average 1.8831168831168832) internal successors, (435), 342 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 435 transitions. [2021-12-16 05:52:12,189 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 435 transitions. Word has length 15 [2021-12-16 05:52:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:12,190 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 435 transitions. [2021-12-16 05:52:12,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 435 transitions. [2021-12-16 05:52:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 05:52:12,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:12,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:12,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 05:52:12,192 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:12,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1316385230, now seen corresponding path program 1 times [2021-12-16 05:52:12,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:12,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213298560] [2021-12-16 05:52:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:12,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:12,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213298560] [2021-12-16 05:52:12,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213298560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:12,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:12,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:52:12,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055358234] [2021-12-16 05:52:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:12,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:12,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:12,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:12,238 INFO L87 Difference]: Start difference. First operand 343 states and 435 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:12,249 INFO L93 Difference]: Finished difference Result 328 states and 410 transitions. [2021-12-16 05:52:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-12-16 05:52:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:12,251 INFO L225 Difference]: With dead ends: 328 [2021-12-16 05:52:12,251 INFO L226 Difference]: Without dead ends: 328 [2021-12-16 05:52:12,251 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 [2021-12-16 05:52:12,252 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 223 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:12,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 363 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:52:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-16 05:52:12,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-12-16 05:52:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 216 states have (on average 1.8981481481481481) internal successors, (410), 327 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 410 transitions. [2021-12-16 05:52:12,258 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 410 transitions. Word has length 16 [2021-12-16 05:52:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:12,258 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 410 transitions. [2021-12-16 05:52:12,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 410 transitions. [2021-12-16 05:52:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 05:52:12,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:12,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:12,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 05:52:12,261 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1932989585, now seen corresponding path program 1 times [2021-12-16 05:52:12,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:12,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421540537] [2021-12-16 05:52:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:12,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:12,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421540537] [2021-12-16 05:52:12,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421540537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:12,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:12,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:12,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707478297] [2021-12-16 05:52:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:12,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:12,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:12,285 INFO L87 Difference]: Start difference. First operand 328 states and 410 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:12,422 INFO L93 Difference]: Finished difference Result 312 states and 378 transitions. [2021-12-16 05:52:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:12,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-12-16 05:52:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:12,424 INFO L225 Difference]: With dead ends: 312 [2021-12-16 05:52:12,424 INFO L226 Difference]: Without dead ends: 312 [2021-12-16 05:52:12,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:12,425 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:12,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 346 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:12,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-16 05:52:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-16 05:52:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 216 states have (on average 1.75) internal successors, (378), 311 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 378 transitions. [2021-12-16 05:52:12,431 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 378 transitions. Word has length 17 [2021-12-16 05:52:12,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:12,431 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 378 transitions. [2021-12-16 05:52:12,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,432 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 378 transitions. [2021-12-16 05:52:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 05:52:12,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:12,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:12,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 05:52:12,433 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1932989586, now seen corresponding path program 1 times [2021-12-16 05:52:12,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:12,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926462517] [2021-12-16 05:52:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:12,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:12,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:12,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926462517] [2021-12-16 05:52:12,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926462517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:12,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:12,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:52:12,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087056708] [2021-12-16 05:52:12,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:12,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:12,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:12,475 INFO L87 Difference]: Start difference. First operand 312 states and 378 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:12,610 INFO L93 Difference]: Finished difference Result 296 states and 346 transitions. [2021-12-16 05:52:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:12,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-12-16 05:52:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:12,612 INFO L225 Difference]: With dead ends: 296 [2021-12-16 05:52:12,612 INFO L226 Difference]: Without dead ends: 296 [2021-12-16 05:52:12,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:12,613 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 61 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:12,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 355 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-16 05:52:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-12-16 05:52:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 216 states have (on average 1.6018518518518519) internal successors, (346), 295 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 346 transitions. [2021-12-16 05:52:12,618 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 346 transitions. Word has length 17 [2021-12-16 05:52:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:12,618 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 346 transitions. [2021-12-16 05:52:12,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 346 transitions. [2021-12-16 05:52:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 05:52:12,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:12,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:12,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 05:52:12,620 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2117838446, now seen corresponding path program 1 times [2021-12-16 05:52:12,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:12,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755012181] [2021-12-16 05:52:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:12,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:12,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755012181] [2021-12-16 05:52:12,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755012181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:12,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:12,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:52:12,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452655583] [2021-12-16 05:52:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:12,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:12,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:12,677 INFO L87 Difference]: Start difference. First operand 296 states and 346 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:12,769 INFO L93 Difference]: Finished difference Result 394 states and 436 transitions. [2021-12-16 05:52:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:52:12,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-16 05:52:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:12,771 INFO L225 Difference]: With dead ends: 394 [2021-12-16 05:52:12,771 INFO L226 Difference]: Without dead ends: 394 [2021-12-16 05:52:12,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:52:12,772 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 277 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:12,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 994 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-16 05:52:12,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 293. [2021-12-16 05:52:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 213 states have (on average 1.596244131455399) internal successors, (340), 292 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 340 transitions. [2021-12-16 05:52:12,779 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 340 transitions. Word has length 19 [2021-12-16 05:52:12,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:12,780 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 340 transitions. [2021-12-16 05:52:12,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:12,780 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 340 transitions. [2021-12-16 05:52:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 05:52:12,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:12,782 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:12,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 05:52:12,782 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1413279430, now seen corresponding path program 1 times [2021-12-16 05:52:12,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:12,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693016698] [2021-12-16 05:52:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:12,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:12,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693016698] [2021-12-16 05:52:12,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693016698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:12,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:12,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:52:12,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776619644] [2021-12-16 05:52:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:12,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:52:12,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:52:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:52:12,869 INFO L87 Difference]: Start difference. First operand 293 states and 340 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:13,098 INFO L93 Difference]: Finished difference Result 316 states and 364 transitions. [2021-12-16 05:52:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:52:13,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-16 05:52:13,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:13,100 INFO L225 Difference]: With dead ends: 316 [2021-12-16 05:52:13,100 INFO L226 Difference]: Without dead ends: 316 [2021-12-16 05:52:13,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:52:13,101 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 272 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:13,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 557 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-16 05:52:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 295. [2021-12-16 05:52:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 217 states have (on average 1.5898617511520738) internal successors, (345), 294 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 345 transitions. [2021-12-16 05:52:13,105 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 345 transitions. Word has length 19 [2021-12-16 05:52:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:13,106 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 345 transitions. [2021-12-16 05:52:13,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 345 transitions. [2021-12-16 05:52:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 05:52:13,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:13,107 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:13,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 05:52:13,107 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:13,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1413279429, now seen corresponding path program 1 times [2021-12-16 05:52:13,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:13,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278505841] [2021-12-16 05:52:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:13,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:13,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278505841] [2021-12-16 05:52:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278505841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:13,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:13,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:52:13,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519621724] [2021-12-16 05:52:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:13,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:13,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:13,167 INFO L87 Difference]: Start difference. First operand 295 states and 345 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:13,465 INFO L93 Difference]: Finished difference Result 409 states and 475 transitions. [2021-12-16 05:52:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:52:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-16 05:52:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:13,467 INFO L225 Difference]: With dead ends: 409 [2021-12-16 05:52:13,467 INFO L226 Difference]: Without dead ends: 409 [2021-12-16 05:52:13,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:52:13,467 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 437 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:13,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 647 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 05:52:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-12-16 05:52:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 294. [2021-12-16 05:52:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 217 states have (on average 1.5852534562211982) internal successors, (344), 293 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 344 transitions. [2021-12-16 05:52:13,473 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 344 transitions. Word has length 19 [2021-12-16 05:52:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:13,473 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 344 transitions. [2021-12-16 05:52:13,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 344 transitions. [2021-12-16 05:52:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 05:52:13,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:13,474 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] [2021-12-16 05:52:13,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 05:52:13,474 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:13,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:13,474 INFO L85 PathProgramCache]: Analyzing trace with hash -805519643, now seen corresponding path program 1 times [2021-12-16 05:52:13,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:13,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852441439] [2021-12-16 05:52:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:13,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:13,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:13,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852441439] [2021-12-16 05:52:13,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852441439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:13,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:13,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 05:52:13,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17515626] [2021-12-16 05:52:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:13,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:52:13,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:13,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:52:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:52:13,543 INFO L87 Difference]: Start difference. First operand 294 states and 344 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:13,759 INFO L93 Difference]: Finished difference Result 394 states and 442 transitions. [2021-12-16 05:52:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 05:52:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-16 05:52:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:13,761 INFO L225 Difference]: With dead ends: 394 [2021-12-16 05:52:13,761 INFO L226 Difference]: Without dead ends: 394 [2021-12-16 05:52:13,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:52:13,762 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 251 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:13,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1409 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-16 05:52:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 280. [2021-12-16 05:52:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 203 states have (on average 1.5812807881773399) internal successors, (321), 279 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 321 transitions. [2021-12-16 05:52:13,767 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 321 transitions. Word has length 24 [2021-12-16 05:52:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:13,767 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 321 transitions. [2021-12-16 05:52:13,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 321 transitions. [2021-12-16 05:52:13,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 05:52:13,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:13,768 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:13,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 05:52:13,768 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1972902682, now seen corresponding path program 1 times [2021-12-16 05:52:13,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:13,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470195297] [2021-12-16 05:52:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:13,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:13,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:13,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470195297] [2021-12-16 05:52:13,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470195297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:13,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:13,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:52:13,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027416193] [2021-12-16 05:52:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:13,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:13,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:13,807 INFO L87 Difference]: Start difference. First operand 280 states and 321 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:13,857 INFO L93 Difference]: Finished difference Result 298 states and 331 transitions. [2021-12-16 05:52:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:52:13,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-16 05:52:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:13,858 INFO L225 Difference]: With dead ends: 298 [2021-12-16 05:52:13,858 INFO L226 Difference]: Without dead ends: 298 [2021-12-16 05:52:13,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:52:13,859 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 667 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:13,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 560 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:52:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-12-16 05:52:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 280. [2021-12-16 05:52:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 203 states have (on average 1.5763546798029557) internal successors, (320), 279 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2021-12-16 05:52:13,864 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 24 [2021-12-16 05:52:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:13,864 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2021-12-16 05:52:13,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2021-12-16 05:52:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-16 05:52:13,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:13,865 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] [2021-12-16 05:52:13,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 05:52:13,866 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr151ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:13,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1021020451, now seen corresponding path program 1 times [2021-12-16 05:52:13,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:13,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378829676] [2021-12-16 05:52:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:13,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:13,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:13,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378829676] [2021-12-16 05:52:13,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378829676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:13,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:13,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:52:13,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997759109] [2021-12-16 05:52:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:13,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:13,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:13,949 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:14,190 INFO L93 Difference]: Finished difference Result 288 states and 321 transitions. [2021-12-16 05:52:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:52:14,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-16 05:52:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:14,191 INFO L225 Difference]: With dead ends: 288 [2021-12-16 05:52:14,191 INFO L226 Difference]: Without dead ends: 284 [2021-12-16 05:52:14,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:14,192 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 26 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:14,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 663 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-16 05:52:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 278. [2021-12-16 05:52:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 201 states have (on average 1.5771144278606966) internal successors, (317), 277 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 317 transitions. [2021-12-16 05:52:14,197 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 317 transitions. Word has length 26 [2021-12-16 05:52:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:14,197 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 317 transitions. [2021-12-16 05:52:14,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 317 transitions. [2021-12-16 05:52:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 05:52:14,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:14,197 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] [2021-12-16 05:52:14,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 05:52:14,198 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1580222949, now seen corresponding path program 1 times [2021-12-16 05:52:14,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:14,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218627376] [2021-12-16 05:52:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:14,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:14,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:14,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218627376] [2021-12-16 05:52:14,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218627376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:14,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:14,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:52:14,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195296132] [2021-12-16 05:52:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:14,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:52:14,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:52:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:52:14,229 INFO L87 Difference]: Start difference. First operand 278 states and 317 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:14,239 INFO L93 Difference]: Finished difference Result 263 states and 292 transitions. [2021-12-16 05:52:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:52:14,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-16 05:52:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:14,240 INFO L225 Difference]: With dead ends: 263 [2021-12-16 05:52:14,240 INFO L226 Difference]: Without dead ends: 245 [2021-12-16 05:52:14,241 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 [2021-12-16 05:52:14,241 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 31 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:14,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 485 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:52:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-16 05:52:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-12-16 05:52:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 168 states have (on average 1.630952380952381) internal successors, (274), 244 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 274 transitions. [2021-12-16 05:52:14,246 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 274 transitions. Word has length 27 [2021-12-16 05:52:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:14,246 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 274 transitions. [2021-12-16 05:52:14,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 274 transitions. [2021-12-16 05:52:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 05:52:14,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:14,247 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:14,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 05:52:14,247 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1161321696, now seen corresponding path program 1 times [2021-12-16 05:52:14,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501666263] [2021-12-16 05:52:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:14,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:14,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:14,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501666263] [2021-12-16 05:52:14,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501666263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:14,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:14,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 05:52:14,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305669733] [2021-12-16 05:52:14,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:14,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 05:52:14,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:14,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 05:52:14,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:52:14,391 INFO L87 Difference]: Start difference. First operand 245 states and 274 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:15,134 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2021-12-16 05:52:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 05:52:15,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-16 05:52:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:15,136 INFO L225 Difference]: With dead ends: 251 [2021-12-16 05:52:15,136 INFO L226 Difference]: Without dead ends: 251 [2021-12-16 05:52:15,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-12-16 05:52:15,137 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 258 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:15,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1314 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 05:52:15,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-16 05:52:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 244. [2021-12-16 05:52:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.625) internal successors, (273), 243 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 273 transitions. [2021-12-16 05:52:15,145 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 273 transitions. Word has length 27 [2021-12-16 05:52:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:15,145 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 273 transitions. [2021-12-16 05:52:15,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 273 transitions. [2021-12-16 05:52:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 05:52:15,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:15,147 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:15,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 05:52:15,147 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1161321697, now seen corresponding path program 1 times [2021-12-16 05:52:15,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:15,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429450740] [2021-12-16 05:52:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:15,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:15,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429450740] [2021-12-16 05:52:15,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429450740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:15,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:15,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 05:52:15,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254323646] [2021-12-16 05:52:15,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:15,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 05:52:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 05:52:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-16 05:52:15,370 INFO L87 Difference]: Start difference. First operand 244 states and 273 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:16,650 INFO L93 Difference]: Finished difference Result 397 states and 450 transitions. [2021-12-16 05:52:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 05:52:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-16 05:52:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:16,652 INFO L225 Difference]: With dead ends: 397 [2021-12-16 05:52:16,652 INFO L226 Difference]: Without dead ends: 397 [2021-12-16 05:52:16,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-16 05:52:16,653 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 819 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:16,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 1653 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 05:52:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-16 05:52:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 243. [2021-12-16 05:52:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 168 states have (on average 1.619047619047619) internal successors, (272), 242 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 272 transitions. [2021-12-16 05:52:16,657 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 272 transitions. Word has length 27 [2021-12-16 05:52:16,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:16,657 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 272 transitions. [2021-12-16 05:52:16,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 272 transitions. [2021-12-16 05:52:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-16 05:52:16,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:16,658 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:16,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 05:52:16,658 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:16,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:16,659 INFO L85 PathProgramCache]: Analyzing trace with hash -672116074, now seen corresponding path program 1 times [2021-12-16 05:52:16,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:16,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084621366] [2021-12-16 05:52:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:16,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:16,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:16,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084621366] [2021-12-16 05:52:16,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084621366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:16,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:16,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 05:52:16,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337078088] [2021-12-16 05:52:16,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:16,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:52:16,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:16,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:52:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:52:16,729 INFO L87 Difference]: Start difference. First operand 243 states and 272 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:16,891 INFO L93 Difference]: Finished difference Result 269 states and 300 transitions. [2021-12-16 05:52:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:52:16,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-12-16 05:52:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:16,892 INFO L225 Difference]: With dead ends: 269 [2021-12-16 05:52:16,892 INFO L226 Difference]: Without dead ends: 269 [2021-12-16 05:52:16,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:52:16,893 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 721 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:16,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 768 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-16 05:52:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 243. [2021-12-16 05:52:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 168 states have (on average 1.6130952380952381) internal successors, (271), 242 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 271 transitions. [2021-12-16 05:52:16,897 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 271 transitions. Word has length 29 [2021-12-16 05:52:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:16,897 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 271 transitions. [2021-12-16 05:52:16,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 271 transitions. [2021-12-16 05:52:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 05:52:16,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:16,898 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:16,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 05:52:16,899 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 102015914, now seen corresponding path program 1 times [2021-12-16 05:52:16,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:16,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823365801] [2021-12-16 05:52:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:16,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 05:52:16,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:16,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823365801] [2021-12-16 05:52:16,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823365801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:16,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:16,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:52:16,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902341206] [2021-12-16 05:52:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:16,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:16,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:16,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:16,967 INFO L87 Difference]: Start difference. First operand 243 states and 271 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:17,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:17,160 INFO L93 Difference]: Finished difference Result 259 states and 290 transitions. [2021-12-16 05:52:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:52:17,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 31 [2021-12-16 05:52:17,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:17,162 INFO L225 Difference]: With dead ends: 259 [2021-12-16 05:52:17,162 INFO L226 Difference]: Without dead ends: 259 [2021-12-16 05:52:17,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:52:17,163 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 51 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:17,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 673 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:17,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-12-16 05:52:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2021-12-16 05:52:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 168 states have (on average 1.6071428571428572) internal successors, (270), 241 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-12-16 05:52:17,169 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 31 [2021-12-16 05:52:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:17,169 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-12-16 05:52:17,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-12-16 05:52:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 05:52:17,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:17,170 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:17,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 05:52:17,170 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 102015915, now seen corresponding path program 1 times [2021-12-16 05:52:17,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:17,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940340476] [2021-12-16 05:52:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:17,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:17,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:17,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940340476] [2021-12-16 05:52:17,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940340476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:17,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:17,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 05:52:17,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807376629] [2021-12-16 05:52:17,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:17,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 05:52:17,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:17,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 05:52:17,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:52:17,311 INFO L87 Difference]: Start difference. First operand 242 states and 270 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:17,830 INFO L93 Difference]: Finished difference Result 374 states and 421 transitions. [2021-12-16 05:52:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 05:52:17,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-12-16 05:52:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:17,832 INFO L225 Difference]: With dead ends: 374 [2021-12-16 05:52:17,832 INFO L226 Difference]: Without dead ends: 374 [2021-12-16 05:52:17,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-16 05:52:17,833 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 542 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:17,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 947 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 05:52:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-12-16 05:52:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 241. [2021-12-16 05:52:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.6011904761904763) internal successors, (269), 240 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 269 transitions. [2021-12-16 05:52:17,837 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 269 transitions. Word has length 31 [2021-12-16 05:52:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:17,838 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 269 transitions. [2021-12-16 05:52:17,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 269 transitions. [2021-12-16 05:52:17,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 05:52:17,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:17,838 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:17,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 05:52:17,839 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:17,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1705778921, now seen corresponding path program 1 times [2021-12-16 05:52:17,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:17,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733028042] [2021-12-16 05:52:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:17,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:17,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733028042] [2021-12-16 05:52:17,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733028042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:17,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:17,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 05:52:17,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535958166] [2021-12-16 05:52:17,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:17,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:52:17,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:52:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:52:17,923 INFO L87 Difference]: Start difference. First operand 241 states and 269 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:18,307 INFO L93 Difference]: Finished difference Result 398 states and 443 transitions. [2021-12-16 05:52:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:52:18,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-12-16 05:52:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:18,309 INFO L225 Difference]: With dead ends: 398 [2021-12-16 05:52:18,309 INFO L226 Difference]: Without dead ends: 398 [2021-12-16 05:52:18,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:52:18,309 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 539 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:18,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 625 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 05:52:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-16 05:52:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 244. [2021-12-16 05:52:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 173 states have (on average 1.5953757225433527) internal successors, (276), 243 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 276 transitions. [2021-12-16 05:52:18,314 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 276 transitions. Word has length 34 [2021-12-16 05:52:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:18,314 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 276 transitions. [2021-12-16 05:52:18,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 276 transitions. [2021-12-16 05:52:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 05:52:18,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:18,315 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:18,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 05:52:18,315 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:18,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1705778920, now seen corresponding path program 1 times [2021-12-16 05:52:18,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:18,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692531898] [2021-12-16 05:52:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:18,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 05:52:18,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:18,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692531898] [2021-12-16 05:52:18,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692531898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:18,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:18,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 05:52:18,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030217407] [2021-12-16 05:52:18,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:18,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:52:18,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:18,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:52:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:52:18,395 INFO L87 Difference]: Start difference. First operand 244 states and 276 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:18,592 INFO L93 Difference]: Finished difference Result 267 states and 302 transitions. [2021-12-16 05:52:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:52:18,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 34 [2021-12-16 05:52:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:18,594 INFO L225 Difference]: With dead ends: 267 [2021-12-16 05:52:18,594 INFO L226 Difference]: Without dead ends: 267 [2021-12-16 05:52:18,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:52:18,595 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 495 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:18,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 380 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-16 05:52:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 245. [2021-12-16 05:52:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 174 states have (on average 1.5919540229885059) internal successors, (277), 244 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 277 transitions. [2021-12-16 05:52:18,599 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 277 transitions. Word has length 34 [2021-12-16 05:52:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:18,599 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 277 transitions. [2021-12-16 05:52:18,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 277 transitions. [2021-12-16 05:52:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 05:52:18,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:18,600 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:18,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 05:52:18,600 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:18,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1332799064, now seen corresponding path program 1 times [2021-12-16 05:52:18,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:18,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496472479] [2021-12-16 05:52:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:18,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:18,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:18,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496472479] [2021-12-16 05:52:18,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496472479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:18,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:18,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-16 05:52:18,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473385894] [2021-12-16 05:52:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:18,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 05:52:18,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 05:52:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-16 05:52:18,920 INFO L87 Difference]: Start difference. First operand 245 states and 277 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:19,828 INFO L93 Difference]: Finished difference Result 247 states and 278 transitions. [2021-12-16 05:52:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 05:52:19,829 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-12-16 05:52:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:19,829 INFO L225 Difference]: With dead ends: 247 [2021-12-16 05:52:19,829 INFO L226 Difference]: Without dead ends: 247 [2021-12-16 05:52:19,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2021-12-16 05:52:19,830 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 334 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:19,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1727 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 05:52:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-16 05:52:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2021-12-16 05:52:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 174 states have (on average 1.5862068965517242) internal successors, (276), 244 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2021-12-16 05:52:19,835 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 35 [2021-12-16 05:52:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:19,835 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2021-12-16 05:52:19,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2021-12-16 05:52:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 05:52:19,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:19,836 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:19,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 05:52:19,836 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash -561839822, now seen corresponding path program 1 times [2021-12-16 05:52:19,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:19,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950416655] [2021-12-16 05:52:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:19,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:20,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:20,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950416655] [2021-12-16 05:52:20,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950416655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:52:20,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951037838] [2021-12-16 05:52:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:20,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:52:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:52:20,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:52:20,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 05:52:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:20,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-16 05:52:20,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:52:20,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 05:52:20,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:52:20,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:52:20,464 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:52:20,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:52:20,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-16 05:52:20,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-16 05:52:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:20,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-16 05:52:20,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:20,601 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-12-16 05:52:20,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-12-16 05:52:20,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:20,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-16 05:52:20,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:20,702 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-12-16 05:52:20,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-12-16 05:52:20,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:52:20,785 INFO L354 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2021-12-16 05:52:20,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2021-12-16 05:52:20,793 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-16 05:52:20,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-16 05:52:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:20,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:52:22,101 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_767 Int) (v_ArrVal_765 Int)) (= 0 (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (select (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_ArrVal_765))) (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse0) (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|))) (+ (select (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse1 v_ArrVal_767) |ULTIMATE.start_main_~#iter~0#1.offset|) 4))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_767 Int) (v_ArrVal_765 Int)) (= 0 (let ((.cse3 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse3 v_ArrVal_767))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse2) (select (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse3 v_ArrVal_765) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))))))) is different from false [2021-12-16 05:52:24,343 INFO L354 Elim1Store]: treesize reduction 134, result has 6.9 percent of original size [2021-12-16 05:52:24,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 15589 treesize of output 12266 [2021-12-16 05:52:24,394 INFO L354 Elim1Store]: treesize reduction 86, result has 10.4 percent of original size [2021-12-16 05:52:24,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 13716 treesize of output 10824 [2021-12-16 05:52:24,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:52:24,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10824 treesize of output 10260 [2021-12-16 05:52:24,472 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:52:24,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10260 treesize of output 9696 [2021-12-16 05:52:24,565 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-16 05:52:24,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 05:52:24,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-16 05:52:24,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131370445] [2021-12-16 05:52:24,566 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 05:52:24,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 05:52:24,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 05:52:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=325, Unknown=2, NotChecked=36, Total=420 [2021-12-16 05:52:24,567 INFO L87 Difference]: Start difference. First operand 245 states and 276 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:25,214 INFO L93 Difference]: Finished difference Result 305 states and 341 transitions. [2021-12-16 05:52:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 05:52:25,214 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-12-16 05:52:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:25,215 INFO L225 Difference]: With dead ends: 305 [2021-12-16 05:52:25,215 INFO L226 Difference]: Without dead ends: 305 [2021-12-16 05:52:25,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=125, Invalid=633, Unknown=2, NotChecked=52, Total=812 [2021-12-16 05:52:25,216 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 76 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:25,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1618 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 05:52:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-16 05:52:25,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 274. [2021-12-16 05:52:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 203 states have (on average 1.5073891625615763) internal successors, (306), 273 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-12-16 05:52:25,221 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 35 [2021-12-16 05:52:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:25,221 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-12-16 05:52:25,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:25,221 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-12-16 05:52:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-16 05:52:25,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:25,222 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:25,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 05:52:25,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-16 05:52:25,440 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2034656951, now seen corresponding path program 1 times [2021-12-16 05:52:25,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:25,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652141081] [2021-12-16 05:52:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:25,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 05:52:25,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:25,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652141081] [2021-12-16 05:52:25,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652141081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:25,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:25,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:52:25,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271391619] [2021-12-16 05:52:25,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:25,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:25,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:25,512 INFO L87 Difference]: Start difference. First operand 274 states and 306 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:25,652 INFO L93 Difference]: Finished difference Result 280 states and 312 transitions. [2021-12-16 05:52:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:52:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 40 [2021-12-16 05:52:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:25,653 INFO L225 Difference]: With dead ends: 280 [2021-12-16 05:52:25,653 INFO L226 Difference]: Without dead ends: 280 [2021-12-16 05:52:25,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:52:25,654 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 2 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:25,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 845 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-16 05:52:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2021-12-16 05:52:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 207 states have (on average 1.497584541062802) internal successors, (310), 277 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 310 transitions. [2021-12-16 05:52:25,662 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 310 transitions. Word has length 40 [2021-12-16 05:52:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:25,663 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 310 transitions. [2021-12-16 05:52:25,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 310 transitions. [2021-12-16 05:52:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 05:52:25,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:25,664 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:25,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-16 05:52:25,664 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:25,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1029093428, now seen corresponding path program 1 times [2021-12-16 05:52:25,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:25,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494533133] [2021-12-16 05:52:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:25,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:25,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494533133] [2021-12-16 05:52:25,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494533133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:25,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:25,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 05:52:25,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241309025] [2021-12-16 05:52:25,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:25,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 05:52:25,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 05:52:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:52:25,794 INFO L87 Difference]: Start difference. First operand 278 states and 310 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:26,236 INFO L93 Difference]: Finished difference Result 423 states and 476 transitions. [2021-12-16 05:52:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 05:52:26,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-16 05:52:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:26,237 INFO L225 Difference]: With dead ends: 423 [2021-12-16 05:52:26,237 INFO L226 Difference]: Without dead ends: 423 [2021-12-16 05:52:26,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-12-16 05:52:26,238 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1106 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:26,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 845 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 05:52:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-16 05:52:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 342. [2021-12-16 05:52:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 271 states have (on average 1.5018450184501846) internal successors, (407), 341 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 407 transitions. [2021-12-16 05:52:26,243 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 407 transitions. Word has length 42 [2021-12-16 05:52:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:26,243 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 407 transitions. [2021-12-16 05:52:26,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 407 transitions. [2021-12-16 05:52:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 05:52:26,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:26,244 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:26,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-16 05:52:26,244 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash -783385736, now seen corresponding path program 1 times [2021-12-16 05:52:26,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:26,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071950098] [2021-12-16 05:52:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:26,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:26,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:26,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071950098] [2021-12-16 05:52:26,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071950098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:26,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:26,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 05:52:26,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55853437] [2021-12-16 05:52:26,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:26,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:52:26,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:26,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:52:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:52:26,311 INFO L87 Difference]: Start difference. First operand 342 states and 407 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:26,412 INFO L93 Difference]: Finished difference Result 462 states and 515 transitions. [2021-12-16 05:52:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:52:26,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-16 05:52:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:26,414 INFO L225 Difference]: With dead ends: 462 [2021-12-16 05:52:26,414 INFO L226 Difference]: Without dead ends: 462 [2021-12-16 05:52:26,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 05:52:26,414 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 938 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:26,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 784 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-16 05:52:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 341. [2021-12-16 05:52:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 270 states have (on average 1.4925925925925927) internal successors, (403), 340 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 403 transitions. [2021-12-16 05:52:26,421 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 403 transitions. Word has length 46 [2021-12-16 05:52:26,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:26,421 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 403 transitions. [2021-12-16 05:52:26,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:26,421 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 403 transitions. [2021-12-16 05:52:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 05:52:26,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:26,422 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:26,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 05:52:26,422 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash 767246721, now seen corresponding path program 2 times [2021-12-16 05:52:26,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:26,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051860096] [2021-12-16 05:52:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:26,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:26,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:26,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051860096] [2021-12-16 05:52:26,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051860096] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:52:26,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838862102] [2021-12-16 05:52:26,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:52:26,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:52:26,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:52:26,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:52:26,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 05:52:27,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 05:52:27,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:52:27,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-16 05:52:27,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:52:27,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 05:52:27,121 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:52:27,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-16 05:52:27,153 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:52:27,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-16 05:52:27,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 05:52:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:27,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-16 05:52:27,311 INFO L354 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2021-12-16 05:52:27,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 65 [2021-12-16 05:52:27,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2021-12-16 05:52:27,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 05:52:27,567 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-16 05:52:27,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:52:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:27,592 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-12-16 05:52:27,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 85 treesize of output 57 [2021-12-16 05:52:28,060 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-16 05:52:28,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:52:28,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:28,086 INFO L354 Elim1Store]: treesize reduction 108, result has 12.2 percent of original size [2021-12-16 05:52:28,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 103 treesize of output 65 [2021-12-16 05:52:28,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 05:52:28,331 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-12-16 05:52:28,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 53 [2021-12-16 05:52:28,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 26 [2021-12-16 05:52:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:28,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:52:28,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838862102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:28,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 05:52:28,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 35 [2021-12-16 05:52:28,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904595538] [2021-12-16 05:52:28,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:28,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 05:52:28,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 05:52:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2021-12-16 05:52:28,611 INFO L87 Difference]: Start difference. First operand 341 states and 403 transitions. Second operand has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:30,369 INFO L93 Difference]: Finished difference Result 370 states and 435 transitions. [2021-12-16 05:52:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 05:52:30,370 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-16 05:52:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:30,371 INFO L225 Difference]: With dead ends: 370 [2021-12-16 05:52:30,371 INFO L226 Difference]: Without dead ends: 370 [2021-12-16 05:52:30,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=422, Invalid=2230, Unknown=0, NotChecked=0, Total=2652 [2021-12-16 05:52:30,372 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 225 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:30,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 2069 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1599 Invalid, 0 Unknown, 333 Unchecked, 0.9s Time] [2021-12-16 05:52:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-16 05:52:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 340. [2021-12-16 05:52:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 270 states have (on average 1.488888888888889) internal successors, (402), 339 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 402 transitions. [2021-12-16 05:52:30,378 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 402 transitions. Word has length 46 [2021-12-16 05:52:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:30,378 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 402 transitions. [2021-12-16 05:52:30,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 402 transitions. [2021-12-16 05:52:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 05:52:30,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:30,379 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:30,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 05:52:30,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-16 05:52:30,580 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:30,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:30,580 INFO L85 PathProgramCache]: Analyzing trace with hash 767246722, now seen corresponding path program 1 times [2021-12-16 05:52:30,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:30,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982444658] [2021-12-16 05:52:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:30,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:31,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982444658] [2021-12-16 05:52:31,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982444658] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:52:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922060460] [2021-12-16 05:52:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:31,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:52:31,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:52:31,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:52:31,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 05:52:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:31,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-16 05:52:31,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:52:31,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 05:52:31,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 05:52:31,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:31,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 05:52:31,487 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-16 05:52:31,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-16 05:52:31,629 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:52:31,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-16 05:52:31,666 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-16 05:52:31,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-16 05:52:31,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:52:31,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:52:32,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:32,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-16 05:52:32,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:32,081 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-16 05:52:32,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 21 [2021-12-16 05:52:32,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-12-16 05:52:32,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-16 05:52:32,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:32,233 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-12-16 05:52:32,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 52 [2021-12-16 05:52:32,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:32,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-16 05:52:32,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:32,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-16 05:52:32,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:32,400 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-12-16 05:52:32,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 52 [2021-12-16 05:52:32,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:52:32,586 INFO L354 Elim1Store]: treesize reduction 103, result has 14.2 percent of original size [2021-12-16 05:52:32,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 73 [2021-12-16 05:52:32,595 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 05:52:32,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 78 [2021-12-16 05:52:32,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2021-12-16 05:52:32,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-16 05:52:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:32,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:52:35,037 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_1312 Int) (v_ArrVal_1311 Int)) (<= 0 (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse1 v_ArrVal_1312))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse0) (select (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 v_ArrVal_1311) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (v_ArrVal_1312 Int) (v_ArrVal_1311 Int)) (let ((.cse6 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse6 v_ArrVal_1312)) (.cse5 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_1311))) (let ((.cse3 (select .cse5 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse4 (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse2) .cse3) .cse4) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse5) .cse3) .cse4)))))))) is different from false [2021-12-16 05:52:39,726 INFO L354 Elim1Store]: treesize reduction 134, result has 6.9 percent of original size [2021-12-16 05:52:39,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1671 treesize of output 1418 [2021-12-16 05:52:39,787 INFO L354 Elim1Store]: treesize reduction 201, result has 6.9 percent of original size [2021-12-16 05:52:39,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 58072 treesize of output 44562 [2021-12-16 05:52:39,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:52:39,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44562 treesize of output 42398 [2021-12-16 05:52:39,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:52:39,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42398 treesize of output 40232 [2021-12-16 05:52:40,237 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-16 05:52:40,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 05:52:40,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-12-16 05:52:40,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881747691] [2021-12-16 05:52:40,238 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 05:52:40,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 05:52:40,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 05:52:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1280, Unknown=2, NotChecked=72, Total=1482 [2021-12-16 05:52:40,239 INFO L87 Difference]: Start difference. First operand 340 states and 402 transitions. Second operand has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:41,638 INFO L93 Difference]: Finished difference Result 472 states and 553 transitions. [2021-12-16 05:52:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 05:52:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-16 05:52:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:41,639 INFO L225 Difference]: With dead ends: 472 [2021-12-16 05:52:41,639 INFO L226 Difference]: Without dead ends: 472 [2021-12-16 05:52:41,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=306, Invalid=2146, Unknown=2, NotChecked=96, Total=2550 [2021-12-16 05:52:41,641 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 978 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:41,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1706 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 05:52:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-16 05:52:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 339. [2021-12-16 05:52:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 270 states have (on average 1.4851851851851852) internal successors, (401), 338 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2021-12-16 05:52:41,646 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 46 [2021-12-16 05:52:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:41,646 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2021-12-16 05:52:41,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2021-12-16 05:52:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 05:52:41,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:41,647 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:41,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 05:52:41,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:52:41,866 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:41,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2037167035, now seen corresponding path program 1 times [2021-12-16 05:52:41,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:41,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045727845] [2021-12-16 05:52:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:41,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 05:52:41,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:41,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045727845] [2021-12-16 05:52:41,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045727845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:41,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:41,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:52:41,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53263037] [2021-12-16 05:52:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:41,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:52:41,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:41,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:52:41,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:52:41,924 INFO L87 Difference]: Start difference. First operand 339 states and 401 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:42,151 INFO L93 Difference]: Finished difference Result 444 states and 519 transitions. [2021-12-16 05:52:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:52:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 48 [2021-12-16 05:52:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:42,152 INFO L225 Difference]: With dead ends: 444 [2021-12-16 05:52:42,152 INFO L226 Difference]: Without dead ends: 444 [2021-12-16 05:52:42,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:52:42,153 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 359 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:42,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 417 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:52:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-16 05:52:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 343. [2021-12-16 05:52:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.4817518248175183) internal successors, (406), 342 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 406 transitions. [2021-12-16 05:52:42,162 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 406 transitions. Word has length 48 [2021-12-16 05:52:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:42,163 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 406 transitions. [2021-12-16 05:52:42,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 406 transitions. [2021-12-16 05:52:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 05:52:42,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:42,164 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:42,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 05:52:42,164 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:42,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2037167036, now seen corresponding path program 1 times [2021-12-16 05:52:42,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:42,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357670855] [2021-12-16 05:52:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:42,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:42,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:42,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357670855] [2021-12-16 05:52:42,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357670855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:42,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:42,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 05:52:42,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825962279] [2021-12-16 05:52:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:42,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 05:52:42,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:42,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 05:52:42,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:52:42,281 INFO L87 Difference]: Start difference. First operand 343 states and 406 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:42,871 INFO L93 Difference]: Finished difference Result 510 states and 577 transitions. [2021-12-16 05:52:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:52:42,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-16 05:52:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:42,872 INFO L225 Difference]: With dead ends: 510 [2021-12-16 05:52:42,872 INFO L226 Difference]: Without dead ends: 510 [2021-12-16 05:52:42,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-16 05:52:42,873 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 744 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 957 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 05:52:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-12-16 05:52:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 343. [2021-12-16 05:52:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.4781021897810218) internal successors, (405), 342 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2021-12-16 05:52:42,878 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 48 [2021-12-16 05:52:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:42,878 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2021-12-16 05:52:42,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:42,879 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2021-12-16 05:52:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 05:52:42,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:42,879 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:42,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 05:52:42,879 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1330545387, now seen corresponding path program 1 times [2021-12-16 05:52:42,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:42,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257546302] [2021-12-16 05:52:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:42,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:43,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:43,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257546302] [2021-12-16 05:52:43,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257546302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:43,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:43,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 05:52:43,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591205634] [2021-12-16 05:52:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:43,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 05:52:43,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 05:52:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:52:43,050 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:43,918 INFO L93 Difference]: Finished difference Result 480 states and 538 transitions. [2021-12-16 05:52:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 05:52:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-12-16 05:52:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:43,920 INFO L225 Difference]: With dead ends: 480 [2021-12-16 05:52:43,920 INFO L226 Difference]: Without dead ends: 480 [2021-12-16 05:52:43,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-12-16 05:52:43,921 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 1123 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:43,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 980 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 05:52:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-16 05:52:43,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 373. [2021-12-16 05:52:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 304 states have (on average 1.5296052631578947) internal successors, (465), 372 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 465 transitions. [2021-12-16 05:52:43,926 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 465 transitions. Word has length 49 [2021-12-16 05:52:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:43,926 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 465 transitions. [2021-12-16 05:52:43,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 465 transitions. [2021-12-16 05:52:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 05:52:43,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:43,927 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:43,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-16 05:52:43,927 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1246142357, now seen corresponding path program 1 times [2021-12-16 05:52:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:43,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500258231] [2021-12-16 05:52:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:43,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:44,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:44,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500258231] [2021-12-16 05:52:44,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500258231] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:52:44,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628316979] [2021-12-16 05:52:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:44,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:52:44,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:52:44,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:52:44,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 05:52:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:44,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-16 05:52:44,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:52:44,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:52:44,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:52:44,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:52:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:52:44,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,775 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-16 05:52:44,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-12-16 05:52:44,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:52:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,888 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-16 05:52:44,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-12-16 05:52:44,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:52:44,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:52:44,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:44,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-16 05:52:44,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 05:52:45,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:52:45,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-16 05:52:45,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:52:45,088 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:52:45,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2021-12-16 05:52:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:45,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:52:45,696 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:52:45,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-16 05:52:45,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:52:45,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2021-12-16 05:52:45,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2021-12-16 05:52:45,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2021-12-16 05:52:45,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-12-16 05:52:45,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-12-16 05:52:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:45,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628316979] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:52:45,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:52:45,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 32 [2021-12-16 05:52:45,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116123341] [2021-12-16 05:52:45,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:52:45,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-16 05:52:45,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-16 05:52:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=884, Unknown=3, NotChecked=0, Total=992 [2021-12-16 05:52:45,821 INFO L87 Difference]: Start difference. First operand 373 states and 465 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:46,841 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2021-12-16 05:52:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 05:52:46,841 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 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 [2021-12-16 05:52:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:46,842 INFO L225 Difference]: With dead ends: 390 [2021-12-16 05:52:46,842 INFO L226 Difference]: Without dead ends: 390 [2021-12-16 05:52:46,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=1567, Unknown=3, NotChecked=0, Total=1806 [2021-12-16 05:52:46,843 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 111 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:46,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 3613 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1306 Invalid, 0 Unknown, 354 Unchecked, 0.6s Time] [2021-12-16 05:52:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-16 05:52:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 384. [2021-12-16 05:52:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 315 states have (on average 1.511111111111111) internal successors, (476), 383 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 476 transitions. [2021-12-16 05:52:46,847 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 476 transitions. Word has length 51 [2021-12-16 05:52:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:46,848 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 476 transitions. [2021-12-16 05:52:46,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 476 transitions. [2021-12-16 05:52:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 05:52:46,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:46,848 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 05:52:46,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-16 05:52:47,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-16 05:52:47,072 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash 997414492, now seen corresponding path program 1 times [2021-12-16 05:52:47,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:47,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085454] [2021-12-16 05:52:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:47,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:52:47,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:47,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085454] [2021-12-16 05:52:47,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:52:47,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:52:47,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 05:52:47,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805947626] [2021-12-16 05:52:47,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:52:47,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:52:47,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:52:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:52:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:52:47,120 INFO L87 Difference]: Start difference. First operand 384 states and 476 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) 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) [2021-12-16 05:52:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:52:47,232 INFO L93 Difference]: Finished difference Result 471 states and 525 transitions. [2021-12-16 05:52:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:52:47,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) 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 [2021-12-16 05:52:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:52:47,234 INFO L225 Difference]: With dead ends: 471 [2021-12-16 05:52:47,234 INFO L226 Difference]: Without dead ends: 471 [2021-12-16 05:52:47,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:52:47,235 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1018 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:52:47,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 789 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:52:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-12-16 05:52:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 384. [2021-12-16 05:52:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 315 states have (on average 1.507936507936508) internal successors, (475), 383 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:52:47,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 475 transitions. [2021-12-16 05:52:47,239 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 475 transitions. Word has length 53 [2021-12-16 05:52:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:52:47,240 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 475 transitions. [2021-12-16 05:52:47,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) 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) [2021-12-16 05:52:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 475 transitions. [2021-12-16 05:52:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-16 05:52:47,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:52:47,240 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:52:47,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 05:52:47,241 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-12-16 05:52:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:52:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -471775986, now seen corresponding path program 1 times [2021-12-16 05:52:47,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:52:47,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934256103] [2021-12-16 05:52:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:47,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:52:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:48,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:52:48,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934256103] [2021-12-16 05:52:48,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934256103] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:52:48,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623036380] [2021-12-16 05:52:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:52:48,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:52:48,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:52:48,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:52:48,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 05:52:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:52:48,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-16 05:52:48,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:52:48,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 05:52:48,627 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-16 05:52:48,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-16 05:52:48,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 05:52:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:48,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-16 05:52:48,814 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-12-16 05:52:48,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2021-12-16 05:52:48,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-16 05:52:48,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-16 05:52:49,071 INFO L354 Elim1Store]: treesize reduction 66, result has 35.3 percent of original size [2021-12-16 05:52:49,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 53 [2021-12-16 05:52:49,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 05:52:49,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-16 05:52:49,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:52:49,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2021-12-16 05:52:49,657 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:52:49,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-16 05:52:49,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:49,712 INFO L354 Elim1Store]: treesize reduction 90, result has 36.6 percent of original size [2021-12-16 05:52:49,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2021-12-16 05:52:49,908 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-16 05:52:49,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 63 [2021-12-16 05:52:49,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-16 05:52:50,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:50,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-16 05:52:50,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:50,217 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-12-16 05:52:50,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 205 treesize of output 100 [2021-12-16 05:52:50,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:50,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-16 05:52:50,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:50,793 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-12-16 05:52:50,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 205 treesize of output 100 [2021-12-16 05:52:51,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-16 05:52:51,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:51,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:52:51,337 INFO L354 Elim1Store]: treesize reduction 119, result has 16.8 percent of original size [2021-12-16 05:52:51,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 225 treesize of output 112 [2021-12-16 05:52:51,348 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-16 05:52:51,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2021-12-16 05:52:51,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:52:51,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-12-16 05:52:52,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:52:52,115 INFO L354 Elim1Store]: treesize reduction 112, result has 13.8 percent of original size [2021-12-16 05:52:52,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 83 [2021-12-16 05:52:52,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:52,906 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-12-16 05:52:52,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 160 treesize of output 51 [2021-12-16 05:52:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:52:53,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:52:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:56,512 INFO L354 Elim1Store]: treesize reduction 44, result has 52.2 percent of original size [2021-12-16 05:52:56,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1843 treesize of output 1852 [2021-12-16 05:52:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:52:56,547 INFO L354 Elim1Store]: treesize reduction 31, result has 49.2 percent of original size [2021-12-16 05:52:56,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 65 [2021-12-16 05:52:57,886 INFO L173 IndexEqualityManager]: detected equality via solver