./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 11:15:51,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 11:15:51,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 11:15:51,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 11:15:51,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 11:15:51,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 11:15:51,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 11:15:51,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 11:15:51,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 11:15:51,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 11:15:51,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 11:15:51,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 11:15:51,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 11:15:51,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 11:15:51,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 11:15:51,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 11:15:51,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 11:15:51,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 11:15:51,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 11:15:51,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 11:15:51,770 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 11:15:51,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 11:15:51,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 11:15:51,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 11:15:51,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 11:15:51,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 11:15:51,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 11:15:51,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 11:15:51,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 11:15:51,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 11:15:51,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 11:15:51,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 11:15:51,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 11:15:51,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 11:15:51,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 11:15:51,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 11:15:51,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 11:15:51,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 11:15:51,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 11:15:51,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 11:15:51,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 11:15:51,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 11:15:51,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 11:15:51,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 11:15:51,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 11:15:51,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 11:15:51,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 11:15:51,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 11:15:51,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 11:15:51,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 11:15:51,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 11:15:51,807 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 11:15:51,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 11:15:51,808 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 11:15:51,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 11:15:51,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 11:15:51,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 11:15:51,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 11:15:51,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 11:15:51,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 11:15:51,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 11:15:51,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 11:15:51,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 11:15:51,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 11:15:51,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 11:15:51,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 11:15:51,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 11:15:51,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:15:51,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 11:15:51,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 11:15:51,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 11:15:51,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 11:15:51,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 11:15:51,812 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 11:15:51,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 11:15:51,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 11:15:51,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2022-07-22 11:15:52,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 11:15:52,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 11:15:52,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 11:15:52,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 11:15:52,032 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 11:15:52,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2022-07-22 11:15:52,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4860aeb23/3a4518d39a8e4f8fbc31acc93182fbcf/FLAG9667bcf49 [2022-07-22 11:15:52,518 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 11:15:52,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2022-07-22 11:15:52,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4860aeb23/3a4518d39a8e4f8fbc31acc93182fbcf/FLAG9667bcf49 [2022-07-22 11:15:52,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4860aeb23/3a4518d39a8e4f8fbc31acc93182fbcf [2022-07-22 11:15:52,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 11:15:52,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 11:15:52,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 11:15:52,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 11:15:52,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 11:15:52,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:52,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f5bed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52, skipping insertion in model container [2022-07-22 11:15:52,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:52,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 11:15:52,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 11:15:52,884 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2022-07-22 11:15:52,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:15:52,899 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 11:15:52,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2022-07-22 11:15:52,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:15:52,994 INFO L208 MainTranslator]: Completed translation [2022-07-22 11:15:52,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52 WrapperNode [2022-07-22 11:15:52,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 11:15:52,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 11:15:52,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 11:15:52,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 11:15:53,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,067 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 816 [2022-07-22 11:15:53,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 11:15:53,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 11:15:53,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 11:15:53,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 11:15:53,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 11:15:53,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 11:15:53,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 11:15:53,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 11:15:53,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (1/1) ... [2022-07-22 11:15:53,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:15:53,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:15:53,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 11:15:53,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 11:15:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 11:15:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 11:15:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 11:15:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 11:15:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 11:15:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 11:15:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 11:15:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 11:15:53,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 11:15:53,399 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 11:15:53,400 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 11:15:53,411 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:15:55,561 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-22 11:15:55,561 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-22 11:15:55,561 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 11:15:55,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 11:15:55,566 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 11:15:55,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:15:55 BoogieIcfgContainer [2022-07-22 11:15:55,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 11:15:55,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 11:15:55,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 11:15:55,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 11:15:55,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:15:52" (1/3) ... [2022-07-22 11:15:55,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d5867a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:15:55, skipping insertion in model container [2022-07-22 11:15:55,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:15:52" (2/3) ... [2022-07-22 11:15:55,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d5867a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:15:55, skipping insertion in model container [2022-07-22 11:15:55,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:15:55" (3/3) ... [2022-07-22 11:15:55,598 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-2.c [2022-07-22 11:15:55,627 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 11:15:55,627 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 11:15:55,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 11:15:55,669 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3dbef866, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@54dd3c29 [2022-07-22 11:15:55,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 11:15:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-22 11:15:55,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:15:55,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:15:55,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:15:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:15:55,696 INFO L85 PathProgramCache]: Analyzing trace with hash 271453869, now seen corresponding path program 1 times [2022-07-22 11:15:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:15:55,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324840605] [2022-07-22 11:15:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:15:55,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:15:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:15:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:15:56,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:15:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324840605] [2022-07-22 11:15:56,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324840605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:15:56,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:15:56,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:15:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558625553] [2022-07-22 11:15:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:15:56,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:15:56,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:15:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:15:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:15:56,181 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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) [2022-07-22 11:15:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:15:56,894 INFO L93 Difference]: Finished difference Result 455 states and 784 transitions. [2022-07-22 11:15:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:15:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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 47 [2022-07-22 11:15:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:15:56,906 INFO L225 Difference]: With dead ends: 455 [2022-07-22 11:15:56,906 INFO L226 Difference]: Without dead ends: 278 [2022-07-22 11:15:56,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:15:56,915 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 176 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:15:56,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 511 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:15:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-22 11:15:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 189. [2022-07-22 11:15:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.6329787234042554) internal successors, (307), 188 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) [2022-07-22 11:15:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 307 transitions. [2022-07-22 11:15:56,969 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 307 transitions. Word has length 47 [2022-07-22 11:15:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:15:56,970 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 307 transitions. [2022-07-22 11:15:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 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) [2022-07-22 11:15:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 307 transitions. [2022-07-22 11:15:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-22 11:15:56,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:15:56,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:15:56,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 11:15:56,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:15:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:15:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash -72299220, now seen corresponding path program 1 times [2022-07-22 11:15:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:15:56,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945634922] [2022-07-22 11:15:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:15:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:15:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:15:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:15:57,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:15:57,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945634922] [2022-07-22 11:15:57,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945634922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:15:57,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:15:57,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:15:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118984198] [2022-07-22 11:15:57,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:15:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:15:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:15:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:15:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:15:57,168 INFO L87 Difference]: Start difference. First operand 189 states and 307 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-07-22 11:15:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:15:57,753 INFO L93 Difference]: Finished difference Result 396 states and 641 transitions. [2022-07-22 11:15:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:15:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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 [2022-07-22 11:15:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:15:57,755 INFO L225 Difference]: With dead ends: 396 [2022-07-22 11:15:57,755 INFO L226 Difference]: Without dead ends: 217 [2022-07-22 11:15:57,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:15:57,756 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 22 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:15:57,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 541 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:15:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-22 11:15:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2022-07-22 11:15:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.6381909547738693) internal successors, (326), 199 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 326 transitions. [2022-07-22 11:15:57,763 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 326 transitions. Word has length 48 [2022-07-22 11:15:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:15:57,763 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 326 transitions. [2022-07-22 11:15:57,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-07-22 11:15:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 326 transitions. [2022-07-22 11:15:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 11:15:57,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:15:57,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:15:57,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 11:15:57,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:15:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:15:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1865586560, now seen corresponding path program 1 times [2022-07-22 11:15:57,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:15:57,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929680192] [2022-07-22 11:15:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:15:57,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:15:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:15:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:15:57,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:15:57,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929680192] [2022-07-22 11:15:57,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929680192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:15:57,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:15:57,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:15:57,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576201602] [2022-07-22 11:15:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:15:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:15:57,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:15:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:15:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:15:57,908 INFO L87 Difference]: Start difference. First operand 200 states and 326 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:15:58,723 INFO L93 Difference]: Finished difference Result 546 states and 895 transitions. [2022-07-22 11:15:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:15:58,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-22 11:15:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:15:58,726 INFO L225 Difference]: With dead ends: 546 [2022-07-22 11:15:58,726 INFO L226 Difference]: Without dead ends: 367 [2022-07-22 11:15:58,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:15:58,727 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 165 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:15:58,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 730 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:15:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-07-22 11:15:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 232. [2022-07-22 11:15:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.632034632034632) internal successors, (377), 231 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 377 transitions. [2022-07-22 11:15:58,735 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 377 transitions. Word has length 61 [2022-07-22 11:15:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:15:58,735 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 377 transitions. [2022-07-22 11:15:58,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 377 transitions. [2022-07-22 11:15:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 11:15:58,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:15:58,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:15:58,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 11:15:58,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:15:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:15:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1829403441, now seen corresponding path program 1 times [2022-07-22 11:15:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:15:58,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544621539] [2022-07-22 11:15:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:15:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:15:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:15:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:15:58,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:15:58,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544621539] [2022-07-22 11:15:58,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544621539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:15:58,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:15:58,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:15:58,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179344750] [2022-07-22 11:15:58,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:15:58,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:15:58,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:15:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:15:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:15:58,825 INFO L87 Difference]: Start difference. First operand 232 states and 377 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:15:59,262 INFO L93 Difference]: Finished difference Result 554 states and 898 transitions. [2022-07-22 11:15:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:15:59,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-22 11:15:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:15:59,265 INFO L225 Difference]: With dead ends: 554 [2022-07-22 11:15:59,265 INFO L226 Difference]: Without dead ends: 343 [2022-07-22 11:15:59,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:15:59,267 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 170 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:15:59,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:15:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-22 11:15:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 232. [2022-07-22 11:15:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.6147186147186148) internal successors, (373), 231 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 373 transitions. [2022-07-22 11:15:59,273 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 373 transitions. Word has length 62 [2022-07-22 11:15:59,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:15:59,273 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 373 transitions. [2022-07-22 11:15:59,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:59,273 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 373 transitions. [2022-07-22 11:15:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 11:15:59,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:15:59,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:15:59,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 11:15:59,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:15:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:15:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1620873285, now seen corresponding path program 1 times [2022-07-22 11:15:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:15:59,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867781593] [2022-07-22 11:15:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:15:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:15:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:15:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:15:59,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:15:59,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867781593] [2022-07-22 11:15:59,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867781593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:15:59,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:15:59,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:15:59,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138466261] [2022-07-22 11:15:59,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:15:59,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:15:59,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:15:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:15:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:15:59,352 INFO L87 Difference]: Start difference. First operand 232 states and 373 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:15:59,834 INFO L93 Difference]: Finished difference Result 459 states and 735 transitions. [2022-07-22 11:15:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:15:59,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-22 11:15:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:15:59,836 INFO L225 Difference]: With dead ends: 459 [2022-07-22 11:15:59,836 INFO L226 Difference]: Without dead ends: 248 [2022-07-22 11:15:59,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:15:59,837 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 26 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:15:59,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 545 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:15:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-07-22 11:15:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 232. [2022-07-22 11:15:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.6103896103896105) internal successors, (372), 231 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 372 transitions. [2022-07-22 11:15:59,843 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 372 transitions. Word has length 62 [2022-07-22 11:15:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:15:59,843 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 372 transitions. [2022-07-22 11:15:59,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:15:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 372 transitions. [2022-07-22 11:15:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 11:15:59,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:15:59,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:15:59,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 11:15:59,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:15:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:15:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash 519909764, now seen corresponding path program 1 times [2022-07-22 11:15:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:15:59,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200402635] [2022-07-22 11:15:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:15:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:15:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:15:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:15:59,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:15:59,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200402635] [2022-07-22 11:15:59,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200402635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:15:59,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:15:59,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:15:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936925219] [2022-07-22 11:15:59,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:15:59,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:15:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:15:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:15:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:15:59,937 INFO L87 Difference]: Start difference. First operand 232 states and 372 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:00,303 INFO L93 Difference]: Finished difference Result 458 states and 733 transitions. [2022-07-22 11:16:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-22 11:16:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:00,304 INFO L225 Difference]: With dead ends: 458 [2022-07-22 11:16:00,304 INFO L226 Difference]: Without dead ends: 247 [2022-07-22 11:16:00,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:00,305 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 19 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:00,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 547 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 11:16:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-07-22 11:16:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 232. [2022-07-22 11:16:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.606060606060606) internal successors, (371), 231 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 371 transitions. [2022-07-22 11:16:00,311 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 371 transitions. Word has length 62 [2022-07-22 11:16:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:00,312 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 371 transitions. [2022-07-22 11:16:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 371 transitions. [2022-07-22 11:16:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 11:16:00,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:00,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:00,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 11:16:00,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1154887876, now seen corresponding path program 1 times [2022-07-22 11:16:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:00,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392833378] [2022-07-22 11:16:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:00,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:00,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392833378] [2022-07-22 11:16:00,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392833378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:00,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:00,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686614580] [2022-07-22 11:16:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:00,400 INFO L87 Difference]: Start difference. First operand 232 states and 371 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:00,846 INFO L93 Difference]: Finished difference Result 554 states and 889 transitions. [2022-07-22 11:16:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-22 11:16:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:00,848 INFO L225 Difference]: With dead ends: 554 [2022-07-22 11:16:00,848 INFO L226 Difference]: Without dead ends: 343 [2022-07-22 11:16:00,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:00,849 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 163 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:00,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:16:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-22 11:16:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 233. [2022-07-22 11:16:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5948275862068966) internal successors, (370), 232 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 370 transitions. [2022-07-22 11:16:00,854 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 370 transitions. Word has length 62 [2022-07-22 11:16:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:00,854 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 370 transitions. [2022-07-22 11:16:00,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 370 transitions. [2022-07-22 11:16:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 11:16:00,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:00,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:00,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 11:16:00,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:00,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1662386487, now seen corresponding path program 1 times [2022-07-22 11:16:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:00,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517077838] [2022-07-22 11:16:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:00,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:00,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:00,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517077838] [2022-07-22 11:16:00,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517077838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:00,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:00,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574516189] [2022-07-22 11:16:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:00,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:00,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:00,946 INFO L87 Difference]: Start difference. First operand 233 states and 370 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:01,415 INFO L93 Difference]: Finished difference Result 458 states and 729 transitions. [2022-07-22 11:16:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:01,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-07-22 11:16:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:01,416 INFO L225 Difference]: With dead ends: 458 [2022-07-22 11:16:01,417 INFO L226 Difference]: Without dead ends: 246 [2022-07-22 11:16:01,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:01,417 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 22 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:01,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 551 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:16:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-22 11:16:01,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 233. [2022-07-22 11:16:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5905172413793103) internal successors, (369), 232 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 369 transitions. [2022-07-22 11:16:01,422 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 369 transitions. Word has length 63 [2022-07-22 11:16:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:01,423 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 369 transitions. [2022-07-22 11:16:01,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 369 transitions. [2022-07-22 11:16:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 11:16:01,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:01,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:01,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 11:16:01,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash -838476330, now seen corresponding path program 1 times [2022-07-22 11:16:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:01,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551112389] [2022-07-22 11:16:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:01,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551112389] [2022-07-22 11:16:01,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551112389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:01,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:01,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049068875] [2022-07-22 11:16:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:01,517 INFO L87 Difference]: Start difference. First operand 233 states and 369 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:01,987 INFO L93 Difference]: Finished difference Result 458 states and 728 transitions. [2022-07-22 11:16:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:01,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-22 11:16:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:01,996 INFO L225 Difference]: With dead ends: 458 [2022-07-22 11:16:01,997 INFO L226 Difference]: Without dead ends: 246 [2022-07-22 11:16:01,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:01,997 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 20 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:01,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 551 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:16:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-22 11:16:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 233. [2022-07-22 11:16:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5862068965517242) internal successors, (368), 232 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 368 transitions. [2022-07-22 11:16:02,002 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 368 transitions. Word has length 64 [2022-07-22 11:16:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:02,002 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 368 transitions. [2022-07-22 11:16:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 368 transitions. [2022-07-22 11:16:02,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 11:16:02,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:02,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:02,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 11:16:02,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2036454322, now seen corresponding path program 1 times [2022-07-22 11:16:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:02,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917163035] [2022-07-22 11:16:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:02,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:02,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917163035] [2022-07-22 11:16:02,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917163035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:02,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:02,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820676277] [2022-07-22 11:16:02,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:02,096 INFO L87 Difference]: Start difference. First operand 233 states and 368 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:02,897 INFO L93 Difference]: Finished difference Result 448 states and 714 transitions. [2022-07-22 11:16:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:02,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-07-22 11:16:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:02,898 INFO L225 Difference]: With dead ends: 448 [2022-07-22 11:16:02,899 INFO L226 Difference]: Without dead ends: 236 [2022-07-22 11:16:02,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:02,899 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 11 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:02,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 565 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:16:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-22 11:16:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2022-07-22 11:16:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.581896551724138) internal successors, (367), 232 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 367 transitions. [2022-07-22 11:16:02,904 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 367 transitions. Word has length 65 [2022-07-22 11:16:02,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:02,904 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 367 transitions. [2022-07-22 11:16:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 367 transitions. [2022-07-22 11:16:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 11:16:02,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:02,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 11:16:02,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1556245834, now seen corresponding path program 1 times [2022-07-22 11:16:02,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:02,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859281055] [2022-07-22 11:16:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:02,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:02,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859281055] [2022-07-22 11:16:02,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859281055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:02,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:02,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632764779] [2022-07-22 11:16:02,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:02,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:02,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:02,993 INFO L87 Difference]: Start difference. First operand 233 states and 367 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:04,043 INFO L93 Difference]: Finished difference Result 485 states and 769 transitions. [2022-07-22 11:16:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-07-22 11:16:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:04,045 INFO L225 Difference]: With dead ends: 485 [2022-07-22 11:16:04,045 INFO L226 Difference]: Without dead ends: 273 [2022-07-22 11:16:04,045 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:04,046 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 31 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:04,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 569 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:16:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-07-22 11:16:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 255. [2022-07-22 11:16:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.5826771653543308) internal successors, (402), 254 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) [2022-07-22 11:16:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 402 transitions. [2022-07-22 11:16:04,050 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 402 transitions. Word has length 65 [2022-07-22 11:16:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:04,051 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 402 transitions. [2022-07-22 11:16:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 402 transitions. [2022-07-22 11:16:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 11:16:04,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:04,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 11:16:04,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash -120356007, now seen corresponding path program 1 times [2022-07-22 11:16:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594292781] [2022-07-22 11:16:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:04,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594292781] [2022-07-22 11:16:04,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594292781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:04,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:04,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:04,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032821164] [2022-07-22 11:16:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:04,136 INFO L87 Difference]: Start difference. First operand 255 states and 402 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:04,840 INFO L93 Difference]: Finished difference Result 599 states and 953 transitions. [2022-07-22 11:16:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:04,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-22 11:16:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:04,842 INFO L225 Difference]: With dead ends: 599 [2022-07-22 11:16:04,842 INFO L226 Difference]: Without dead ends: 365 [2022-07-22 11:16:04,842 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:04,843 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 168 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:04,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:16:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-22 11:16:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 255. [2022-07-22 11:16:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.5669291338582678) internal successors, (398), 254 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 398 transitions. [2022-07-22 11:16:04,849 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 398 transitions. Word has length 79 [2022-07-22 11:16:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:04,850 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 398 transitions. [2022-07-22 11:16:04,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 398 transitions. [2022-07-22 11:16:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 11:16:04,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:04,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 11:16:04,851 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:04,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2020427042, now seen corresponding path program 1 times [2022-07-22 11:16:04,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:04,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214966275] [2022-07-22 11:16:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:04,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:04,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:04,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214966275] [2022-07-22 11:16:04,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214966275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:04,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:04,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712910408] [2022-07-22 11:16:04,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:04,946 INFO L87 Difference]: Start difference. First operand 255 states and 398 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:05,969 INFO L93 Difference]: Finished difference Result 506 states and 794 transitions. [2022-07-22 11:16:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:05,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-22 11:16:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:05,970 INFO L225 Difference]: With dead ends: 506 [2022-07-22 11:16:05,970 INFO L226 Difference]: Without dead ends: 272 [2022-07-22 11:16:05,971 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:05,971 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 33 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:05,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 571 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:16:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-22 11:16:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 255. [2022-07-22 11:16:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.562992125984252) internal successors, (397), 254 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 397 transitions. [2022-07-22 11:16:05,977 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 397 transitions. Word has length 79 [2022-07-22 11:16:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:05,978 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 397 transitions. [2022-07-22 11:16:05,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 397 transitions. [2022-07-22 11:16:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 11:16:05,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:05,979 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:05,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 11:16:05,980 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash 933781849, now seen corresponding path program 1 times [2022-07-22 11:16:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:05,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101353768] [2022-07-22 11:16:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:05,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:06,061 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:06,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:06,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101353768] [2022-07-22 11:16:06,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101353768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:06,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:06,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:06,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431160126] [2022-07-22 11:16:06,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:06,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:06,063 INFO L87 Difference]: Start difference. First operand 255 states and 397 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:07,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:07,853 INFO L93 Difference]: Finished difference Result 599 states and 943 transitions. [2022-07-22 11:16:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-07-22 11:16:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:07,855 INFO L225 Difference]: With dead ends: 599 [2022-07-22 11:16:07,855 INFO L226 Difference]: Without dead ends: 365 [2022-07-22 11:16:07,855 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:07,856 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 166 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:07,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 11:16:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-22 11:16:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 255. [2022-07-22 11:16:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.547244094488189) internal successors, (393), 254 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 393 transitions. [2022-07-22 11:16:07,861 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 393 transitions. Word has length 80 [2022-07-22 11:16:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:07,861 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 393 transitions. [2022-07-22 11:16:07,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 393 transitions. [2022-07-22 11:16:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 11:16:07,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:07,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:07,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 11:16:07,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1950383628, now seen corresponding path program 1 times [2022-07-22 11:16:07,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:07,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359032542] [2022-07-22 11:16:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:07,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:07,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:07,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359032542] [2022-07-22 11:16:07,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359032542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:07,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:07,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618130407] [2022-07-22 11:16:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:07,967 INFO L87 Difference]: Start difference. First operand 255 states and 393 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:09,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:10,149 INFO L93 Difference]: Finished difference Result 599 states and 935 transitions. [2022-07-22 11:16:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-22 11:16:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:10,150 INFO L225 Difference]: With dead ends: 599 [2022-07-22 11:16:10,150 INFO L226 Difference]: Without dead ends: 365 [2022-07-22 11:16:10,151 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:10,151 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 164 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:10,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 406 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 11:16:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-22 11:16:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 255. [2022-07-22 11:16:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.531496062992126) internal successors, (389), 254 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 389 transitions. [2022-07-22 11:16:10,156 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 389 transitions. Word has length 81 [2022-07-22 11:16:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:10,156 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 389 transitions. [2022-07-22 11:16:10,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 389 transitions. [2022-07-22 11:16:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-22 11:16:10,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:10,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:10,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 11:16:10,158 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1927066452, now seen corresponding path program 1 times [2022-07-22 11:16:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:10,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272956855] [2022-07-22 11:16:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:10,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:16:10,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:10,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272956855] [2022-07-22 11:16:10,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272956855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:10,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:10,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:10,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612372736] [2022-07-22 11:16:10,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:10,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:10,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:10,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:10,231 INFO L87 Difference]: Start difference. First operand 255 states and 389 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:12,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:12,543 INFO L93 Difference]: Finished difference Result 589 states and 914 transitions. [2022-07-22 11:16:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-22 11:16:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:12,545 INFO L225 Difference]: With dead ends: 589 [2022-07-22 11:16:12,545 INFO L226 Difference]: Without dead ends: 355 [2022-07-22 11:16:12,546 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:12,546 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 155 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:12,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 426 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 245 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 11:16:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-22 11:16:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 255. [2022-07-22 11:16:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.515748031496063) internal successors, (385), 254 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2022-07-22 11:16:12,550 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 82 [2022-07-22 11:16:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:12,551 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2022-07-22 11:16:12,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2022-07-22 11:16:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 11:16:12,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:12,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:12,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 11:16:12,552 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2120868205, now seen corresponding path program 1 times [2022-07-22 11:16:12,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:12,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592642240] [2022-07-22 11:16:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:12,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:16:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:12,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592642240] [2022-07-22 11:16:12,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592642240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:12,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:12,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247562954] [2022-07-22 11:16:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:12,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:12,643 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:13,323 INFO L93 Difference]: Finished difference Result 589 states and 906 transitions. [2022-07-22 11:16:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:13,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-07-22 11:16:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:13,325 INFO L225 Difference]: With dead ends: 589 [2022-07-22 11:16:13,325 INFO L226 Difference]: Without dead ends: 355 [2022-07-22 11:16:13,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:13,326 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 129 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:13,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 456 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:16:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-22 11:16:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 278. [2022-07-22 11:16:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.552346570397112) internal successors, (430), 277 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 430 transitions. [2022-07-22 11:16:13,330 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 430 transitions. Word has length 87 [2022-07-22 11:16:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:13,331 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 430 transitions. [2022-07-22 11:16:13,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 430 transitions. [2022-07-22 11:16:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 11:16:13,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:13,332 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-22 11:16:13,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 11:16:13,332 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1055569381, now seen corresponding path program 1 times [2022-07-22 11:16:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:13,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979094712] [2022-07-22 11:16:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:16:13,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979094712] [2022-07-22 11:16:13,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979094712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:13,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:13,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73972980] [2022-07-22 11:16:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:13,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:13,413 INFO L87 Difference]: Start difference. First operand 278 states and 430 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:15,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:15,661 INFO L93 Difference]: Finished difference Result 625 states and 974 transitions. [2022-07-22 11:16:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:15,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 115 [2022-07-22 11:16:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:15,663 INFO L225 Difference]: With dead ends: 625 [2022-07-22 11:16:15,663 INFO L226 Difference]: Without dead ends: 368 [2022-07-22 11:16:15,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:15,664 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 90 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:15,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 547 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 236 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 11:16:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-07-22 11:16:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 312. [2022-07-22 11:16:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.5530546623794212) internal successors, (483), 311 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 483 transitions. [2022-07-22 11:16:15,670 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 483 transitions. Word has length 115 [2022-07-22 11:16:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:15,670 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 483 transitions. [2022-07-22 11:16:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 483 transitions. [2022-07-22 11:16:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 11:16:15,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:15,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-22 11:16:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 11:16:15,672 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -978668583, now seen corresponding path program 1 times [2022-07-22 11:16:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:15,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819548480] [2022-07-22 11:16:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:16:15,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:15,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819548480] [2022-07-22 11:16:15,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819548480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:15,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:15,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:15,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387860802] [2022-07-22 11:16:15,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:15,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:15,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:15,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:15,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:15,796 INFO L87 Difference]: Start difference. First operand 312 states and 483 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:17,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:17,617 INFO L93 Difference]: Finished difference Result 756 states and 1184 transitions. [2022-07-22 11:16:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 115 [2022-07-22 11:16:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:17,619 INFO L225 Difference]: With dead ends: 756 [2022-07-22 11:16:17,619 INFO L226 Difference]: Without dead ends: 465 [2022-07-22 11:16:17,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:17,620 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 135 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:17,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 436 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 11:16:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-22 11:16:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 342. [2022-07-22 11:16:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.5601173020527859) internal successors, (532), 341 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 532 transitions. [2022-07-22 11:16:17,626 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 532 transitions. Word has length 115 [2022-07-22 11:16:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:17,626 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 532 transitions. [2022-07-22 11:16:17,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 532 transitions. [2022-07-22 11:16:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 11:16:17,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:17,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:17,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 11:16:17,627 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1185621468, now seen corresponding path program 1 times [2022-07-22 11:16:17,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:17,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597384174] [2022-07-22 11:16:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:16:17,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:17,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597384174] [2022-07-22 11:16:17,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597384174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:17,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:17,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:17,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625393306] [2022-07-22 11:16:17,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:17,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:17,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:17,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:17,722 INFO L87 Difference]: Start difference. First operand 342 states and 532 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:18,381 INFO L93 Difference]: Finished difference Result 780 states and 1219 transitions. [2022-07-22 11:16:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 121 [2022-07-22 11:16:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:18,382 INFO L225 Difference]: With dead ends: 780 [2022-07-22 11:16:18,382 INFO L226 Difference]: Without dead ends: 459 [2022-07-22 11:16:18,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:18,383 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 131 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:18,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 424 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:16:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-22 11:16:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 379. [2022-07-22 11:16:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.5634920634920635) internal successors, (591), 378 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 591 transitions. [2022-07-22 11:16:18,389 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 591 transitions. Word has length 121 [2022-07-22 11:16:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:18,389 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 591 transitions. [2022-07-22 11:16:18,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 591 transitions. [2022-07-22 11:16:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 11:16:18,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:18,390 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 11:16:18,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 11:16:18,390 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:18,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:18,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1466195913, now seen corresponding path program 1 times [2022-07-22 11:16:18,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:18,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778176478] [2022-07-22 11:16:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:16:18,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:18,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778176478] [2022-07-22 11:16:18,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778176478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:18,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:18,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:18,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490629984] [2022-07-22 11:16:18,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:18,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:18,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:18,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:18,480 INFO L87 Difference]: Start difference. First operand 379 states and 591 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:20,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:20,655 INFO L93 Difference]: Finished difference Result 824 states and 1290 transitions. [2022-07-22 11:16:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:20,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 122 [2022-07-22 11:16:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:20,657 INFO L225 Difference]: With dead ends: 824 [2022-07-22 11:16:20,657 INFO L226 Difference]: Without dead ends: 466 [2022-07-22 11:16:20,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:20,658 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 79 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:20,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 549 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 11:16:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-07-22 11:16:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 419. [2022-07-22 11:16:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5645933014354068) internal successors, (654), 418 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 654 transitions. [2022-07-22 11:16:20,665 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 654 transitions. Word has length 122 [2022-07-22 11:16:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:20,665 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 654 transitions. [2022-07-22 11:16:20,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 654 transitions. [2022-07-22 11:16:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 11:16:20,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:20,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 11:16:20,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 11:16:20,667 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1225956167, now seen corresponding path program 1 times [2022-07-22 11:16:20,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:20,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467172573] [2022-07-22 11:16:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:20,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:20,738 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 11:16:20,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:20,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467172573] [2022-07-22 11:16:20,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467172573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:20,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:20,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:20,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120999718] [2022-07-22 11:16:20,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:20,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:20,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:20,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:20,740 INFO L87 Difference]: Start difference. First operand 419 states and 654 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:21,599 INFO L93 Difference]: Finished difference Result 854 states and 1337 transitions. [2022-07-22 11:16:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:21,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 122 [2022-07-22 11:16:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:21,601 INFO L225 Difference]: With dead ends: 854 [2022-07-22 11:16:21,601 INFO L226 Difference]: Without dead ends: 456 [2022-07-22 11:16:21,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:21,602 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 28 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:21,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 649 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:16:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-07-22 11:16:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 443. [2022-07-22 11:16:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5588235294117647) internal successors, (689), 442 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 689 transitions. [2022-07-22 11:16:21,609 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 689 transitions. Word has length 122 [2022-07-22 11:16:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:21,609 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 689 transitions. [2022-07-22 11:16:21,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 689 transitions. [2022-07-22 11:16:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 11:16:21,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:21,610 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:21,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 11:16:21,611 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1414034971, now seen corresponding path program 1 times [2022-07-22 11:16:21,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:21,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132232257] [2022-07-22 11:16:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:16:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:21,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132232257] [2022-07-22 11:16:21,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132232257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:21,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:21,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:21,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210070334] [2022-07-22 11:16:21,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:21,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:21,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:21,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:21,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:21,687 INFO L87 Difference]: Start difference. First operand 443 states and 689 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:22,363 INFO L93 Difference]: Finished difference Result 903 states and 1407 transitions. [2022-07-22 11:16:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:22,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 129 [2022-07-22 11:16:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:22,365 INFO L225 Difference]: With dead ends: 903 [2022-07-22 11:16:22,365 INFO L226 Difference]: Without dead ends: 481 [2022-07-22 11:16:22,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:22,366 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 61 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:22,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 555 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:16:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-07-22 11:16:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 446. [2022-07-22 11:16:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.5550561797752809) internal successors, (692), 445 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 692 transitions. [2022-07-22 11:16:22,372 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 692 transitions. Word has length 129 [2022-07-22 11:16:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:22,373 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 692 transitions. [2022-07-22 11:16:22,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 692 transitions. [2022-07-22 11:16:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 11:16:22,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:22,375 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:22,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 11:16:22,375 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash 417072415, now seen corresponding path program 1 times [2022-07-22 11:16:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:22,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306042808] [2022-07-22 11:16:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:16:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306042808] [2022-07-22 11:16:22,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306042808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:22,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:22,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:22,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180333521] [2022-07-22 11:16:22,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:22,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:22,471 INFO L87 Difference]: Start difference. First operand 446 states and 692 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:23,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:23,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:23,874 INFO L93 Difference]: Finished difference Result 905 states and 1408 transitions. [2022-07-22 11:16:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:23,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 136 [2022-07-22 11:16:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:23,876 INFO L225 Difference]: With dead ends: 905 [2022-07-22 11:16:23,876 INFO L226 Difference]: Without dead ends: 480 [2022-07-22 11:16:23,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:23,877 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 83 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:23,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 557 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 11:16:23,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-22 11:16:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 446. [2022-07-22 11:16:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.552808988764045) internal successors, (691), 445 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 691 transitions. [2022-07-22 11:16:23,884 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 691 transitions. Word has length 136 [2022-07-22 11:16:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:23,884 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 691 transitions. [2022-07-22 11:16:23,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 691 transitions. [2022-07-22 11:16:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 11:16:23,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:23,886 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:23,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 11:16:23,886 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash -466436575, now seen corresponding path program 1 times [2022-07-22 11:16:23,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:23,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037224612] [2022-07-22 11:16:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:16:23,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:23,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037224612] [2022-07-22 11:16:23,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037224612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:23,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:23,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:23,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863120476] [2022-07-22 11:16:23,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:23,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:23,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:23,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:23,977 INFO L87 Difference]: Start difference. First operand 446 states and 691 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:24,839 INFO L93 Difference]: Finished difference Result 883 states and 1374 transitions. [2022-07-22 11:16:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:24,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 136 [2022-07-22 11:16:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:24,841 INFO L225 Difference]: With dead ends: 883 [2022-07-22 11:16:24,841 INFO L226 Difference]: Without dead ends: 458 [2022-07-22 11:16:24,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:24,842 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 33 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:24,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 649 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:16:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-07-22 11:16:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 446. [2022-07-22 11:16:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.550561797752809) internal successors, (690), 445 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 690 transitions. [2022-07-22 11:16:24,849 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 690 transitions. Word has length 136 [2022-07-22 11:16:24,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:24,849 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 690 transitions. [2022-07-22 11:16:24,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:24,849 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 690 transitions. [2022-07-22 11:16:24,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 11:16:24,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:24,851 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:24,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 11:16:24,851 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:24,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:24,851 INFO L85 PathProgramCache]: Analyzing trace with hash 204789508, now seen corresponding path program 1 times [2022-07-22 11:16:24,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:24,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343218337] [2022-07-22 11:16:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:24,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:16:24,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:24,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343218337] [2022-07-22 11:16:24,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343218337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:24,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:24,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251840368] [2022-07-22 11:16:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:24,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:24,948 INFO L87 Difference]: Start difference. First operand 446 states and 690 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:26,053 INFO L93 Difference]: Finished difference Result 988 states and 1534 transitions. [2022-07-22 11:16:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 142 [2022-07-22 11:16:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:26,056 INFO L225 Difference]: With dead ends: 988 [2022-07-22 11:16:26,056 INFO L226 Difference]: Without dead ends: 563 [2022-07-22 11:16:26,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:26,057 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 138 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:26,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 456 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:16:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-22 11:16:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 476. [2022-07-22 11:16:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.5410526315789475) internal successors, (732), 475 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 732 transitions. [2022-07-22 11:16:26,065 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 732 transitions. Word has length 142 [2022-07-22 11:16:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:26,065 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 732 transitions. [2022-07-22 11:16:26,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 732 transitions. [2022-07-22 11:16:26,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-22 11:16:26,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:26,067 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 11:16:26,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 11:16:26,067 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1261572010, now seen corresponding path program 1 times [2022-07-22 11:16:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641839515] [2022-07-22 11:16:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:16:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:26,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641839515] [2022-07-22 11:16:26,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641839515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:26,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:26,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498128480] [2022-07-22 11:16:26,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:26,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:26,157 INFO L87 Difference]: Start difference. First operand 476 states and 732 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:26,593 INFO L93 Difference]: Finished difference Result 1008 states and 1554 transitions. [2022-07-22 11:16:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:26,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 143 [2022-07-22 11:16:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:26,595 INFO L225 Difference]: With dead ends: 1008 [2022-07-22 11:16:26,595 INFO L226 Difference]: Without dead ends: 553 [2022-07-22 11:16:26,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:26,596 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 137 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:26,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 424 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:16:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-22 11:16:26,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 476. [2022-07-22 11:16:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.528421052631579) internal successors, (726), 475 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 726 transitions. [2022-07-22 11:16:26,628 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 726 transitions. Word has length 143 [2022-07-22 11:16:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:26,628 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 726 transitions. [2022-07-22 11:16:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 726 transitions. [2022-07-22 11:16:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 11:16:26,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:26,629 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:26,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 11:16:26,629 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1455297220, now seen corresponding path program 1 times [2022-07-22 11:16:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:26,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482039008] [2022-07-22 11:16:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:16:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:26,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482039008] [2022-07-22 11:16:26,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482039008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:26,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:26,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227761662] [2022-07-22 11:16:26,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:26,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:26,704 INFO L87 Difference]: Start difference. First operand 476 states and 726 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:28,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:28,937 INFO L93 Difference]: Finished difference Result 963 states and 1474 transitions. [2022-07-22 11:16:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:28,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 144 [2022-07-22 11:16:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:28,939 INFO L225 Difference]: With dead ends: 963 [2022-07-22 11:16:28,939 INFO L226 Difference]: Without dead ends: 508 [2022-07-22 11:16:28,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:28,940 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 73 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:28,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 575 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 11:16:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-07-22 11:16:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 476. [2022-07-22 11:16:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.5263157894736843) internal successors, (725), 475 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 725 transitions. [2022-07-22 11:16:28,947 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 725 transitions. Word has length 144 [2022-07-22 11:16:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:28,948 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 725 transitions. [2022-07-22 11:16:28,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 725 transitions. [2022-07-22 11:16:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 11:16:28,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:28,949 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:28,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 11:16:28,949 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1532527678, now seen corresponding path program 1 times [2022-07-22 11:16:28,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:28,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569320305] [2022-07-22 11:16:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:28,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 11:16:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:29,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569320305] [2022-07-22 11:16:29,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569320305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:29,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:29,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:29,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081375830] [2022-07-22 11:16:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:29,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,022 INFO L87 Difference]: Start difference. First operand 476 states and 725 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:29,104 INFO L93 Difference]: Finished difference Result 1383 states and 2123 transitions. [2022-07-22 11:16:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:29,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 144 [2022-07-22 11:16:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:29,107 INFO L225 Difference]: With dead ends: 1383 [2022-07-22 11:16:29,107 INFO L226 Difference]: Without dead ends: 928 [2022-07-22 11:16:29,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,109 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 154 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:29,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 446 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-07-22 11:16:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 928. [2022-07-22 11:16:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 1.5113268608414239) internal successors, (1401), 927 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1401 transitions. [2022-07-22 11:16:29,121 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1401 transitions. Word has length 144 [2022-07-22 11:16:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:29,121 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1401 transitions. [2022-07-22 11:16:29,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1401 transitions. [2022-07-22 11:16:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 11:16:29,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:29,123 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:29,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 11:16:29,123 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:29,124 INFO L85 PathProgramCache]: Analyzing trace with hash -500866368, now seen corresponding path program 1 times [2022-07-22 11:16:29,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:29,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350677176] [2022-07-22 11:16:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:29,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 11:16:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:29,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350677176] [2022-07-22 11:16:29,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350677176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:29,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:29,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085525946] [2022-07-22 11:16:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:29,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,190 INFO L87 Difference]: Start difference. First operand 928 states and 1401 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:29,228 INFO L93 Difference]: Finished difference Result 1862 states and 2814 transitions. [2022-07-22 11:16:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:29,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 144 [2022-07-22 11:16:29,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:29,231 INFO L225 Difference]: With dead ends: 1862 [2022-07-22 11:16:29,231 INFO L226 Difference]: Without dead ends: 955 [2022-07-22 11:16:29,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,232 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:29,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 434 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-07-22 11:16:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 955. [2022-07-22 11:16:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 954 states have (on average 1.5052410901467506) internal successors, (1436), 954 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1436 transitions. [2022-07-22 11:16:29,246 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1436 transitions. Word has length 144 [2022-07-22 11:16:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:29,246 INFO L495 AbstractCegarLoop]: Abstraction has 955 states and 1436 transitions. [2022-07-22 11:16:29,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1436 transitions. [2022-07-22 11:16:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 11:16:29,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:29,248 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:29,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 11:16:29,248 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:29,249 INFO L85 PathProgramCache]: Analyzing trace with hash 360967234, now seen corresponding path program 1 times [2022-07-22 11:16:29,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:29,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803988661] [2022-07-22 11:16:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:29,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-22 11:16:29,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:29,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803988661] [2022-07-22 11:16:29,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803988661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:29,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:29,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475630229] [2022-07-22 11:16:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:29,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,315 INFO L87 Difference]: Start difference. First operand 955 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:29,375 INFO L93 Difference]: Finished difference Result 1891 states and 2850 transitions. [2022-07-22 11:16:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:29,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-07-22 11:16:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:29,377 INFO L225 Difference]: With dead ends: 1891 [2022-07-22 11:16:29,377 INFO L226 Difference]: Without dead ends: 957 [2022-07-22 11:16:29,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,378 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:29,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 413 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:29,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-07-22 11:16:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2022-07-22 11:16:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.50418410041841) internal successors, (1438), 956 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1438 transitions. [2022-07-22 11:16:29,391 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1438 transitions. Word has length 144 [2022-07-22 11:16:29,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:29,391 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1438 transitions. [2022-07-22 11:16:29,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1438 transitions. [2022-07-22 11:16:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 11:16:29,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:29,393 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:29,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 11:16:29,393 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:29,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1469229848, now seen corresponding path program 1 times [2022-07-22 11:16:29,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:29,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336959622] [2022-07-22 11:16:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 11:16:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:29,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336959622] [2022-07-22 11:16:29,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336959622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:29,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:29,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522421202] [2022-07-22 11:16:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:29,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:29,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:29,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,465 INFO L87 Difference]: Start difference. First operand 957 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:29,532 INFO L93 Difference]: Finished difference Result 2343 states and 3547 transitions. [2022-07-22 11:16:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:29,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 146 [2022-07-22 11:16:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:29,536 INFO L225 Difference]: With dead ends: 2343 [2022-07-22 11:16:29,536 INFO L226 Difference]: Without dead ends: 1409 [2022-07-22 11:16:29,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:29,538 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 159 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:29,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 594 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-07-22 11:16:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1409. [2022-07-22 11:16:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 1.5014204545454546) internal successors, (2114), 1408 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2114 transitions. [2022-07-22 11:16:29,558 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2114 transitions. Word has length 146 [2022-07-22 11:16:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:29,558 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 2114 transitions. [2022-07-22 11:16:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2114 transitions. [2022-07-22 11:16:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 11:16:29,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:29,561 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:29,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 11:16:29,561 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:29,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1434763751, now seen corresponding path program 1 times [2022-07-22 11:16:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:29,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590204101] [2022-07-22 11:16:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 11:16:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:29,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590204101] [2022-07-22 11:16:29,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590204101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:29,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:29,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:29,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835501044] [2022-07-22 11:16:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:29,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:29,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:29,655 INFO L87 Difference]: Start difference. First operand 1409 states and 2114 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:30,285 INFO L93 Difference]: Finished difference Result 2948 states and 4429 transitions. [2022-07-22 11:16:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 175 [2022-07-22 11:16:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:30,289 INFO L225 Difference]: With dead ends: 2948 [2022-07-22 11:16:30,289 INFO L226 Difference]: Without dead ends: 1562 [2022-07-22 11:16:30,290 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:30,291 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 42 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:30,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 665 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:16:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-22 11:16:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1493. [2022-07-22 11:16:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 1.5033512064343164) internal successors, (2243), 1492 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2243 transitions. [2022-07-22 11:16:30,311 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2243 transitions. Word has length 175 [2022-07-22 11:16:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:30,311 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2243 transitions. [2022-07-22 11:16:30,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2243 transitions. [2022-07-22 11:16:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 11:16:30,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:30,314 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:30,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 11:16:30,314 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:30,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash -866603135, now seen corresponding path program 1 times [2022-07-22 11:16:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:30,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307060931] [2022-07-22 11:16:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-22 11:16:30,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:30,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307060931] [2022-07-22 11:16:30,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307060931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:30,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:30,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218906988] [2022-07-22 11:16:30,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:30,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:30,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:30,402 INFO L87 Difference]: Start difference. First operand 1493 states and 2243 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:31,010 INFO L93 Difference]: Finished difference Result 3186 states and 4762 transitions. [2022-07-22 11:16:31,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:31,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 189 [2022-07-22 11:16:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:31,015 INFO L225 Difference]: With dead ends: 3186 [2022-07-22 11:16:31,015 INFO L226 Difference]: Without dead ends: 1716 [2022-07-22 11:16:31,016 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:16:31,016 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 149 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:31,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 426 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:16:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-07-22 11:16:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1493. [2022-07-22 11:16:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 1.4892761394101877) internal successors, (2222), 1492 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2222 transitions. [2022-07-22 11:16:31,038 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2222 transitions. Word has length 189 [2022-07-22 11:16:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:31,039 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2222 transitions. [2022-07-22 11:16:31,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2222 transitions. [2022-07-22 11:16:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-22 11:16:31,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:31,041 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:31,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 11:16:31,041 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1420236190, now seen corresponding path program 1 times [2022-07-22 11:16:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:31,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623727498] [2022-07-22 11:16:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 252 proven. 38 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 11:16:31,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623727498] [2022-07-22 11:16:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623727498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:16:31,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018028731] [2022-07-22 11:16:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:31,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:16:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:16:31,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:16:31,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 11:16:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:31,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:16:31,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:16:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 11:16:31,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:16:31,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018028731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:31,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:16:31,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 11:16:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681839598] [2022-07-22 11:16:31,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:31,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:31,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:16:31,857 INFO L87 Difference]: Start difference. First operand 1493 states and 2222 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:31,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:31,928 INFO L93 Difference]: Finished difference Result 3444 states and 5152 transitions. [2022-07-22 11:16:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:31,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 197 [2022-07-22 11:16:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:31,934 INFO L225 Difference]: With dead ends: 3444 [2022-07-22 11:16:31,934 INFO L226 Difference]: Without dead ends: 1974 [2022-07-22 11:16:31,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:16:31,937 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 166 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:31,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 387 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2022-07-22 11:16:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1974. [2022-07-22 11:16:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.490116573745565) internal successors, (2940), 1973 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2940 transitions. [2022-07-22 11:16:31,967 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2940 transitions. Word has length 197 [2022-07-22 11:16:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:31,968 INFO L495 AbstractCegarLoop]: Abstraction has 1974 states and 2940 transitions. [2022-07-22 11:16:31,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2940 transitions. [2022-07-22 11:16:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-22 11:16:31,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:31,971 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:32,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 11:16:32,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-22 11:16:32,187 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2107016587, now seen corresponding path program 1 times [2022-07-22 11:16:32,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:32,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198578215] [2022-07-22 11:16:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:32,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-22 11:16:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:32,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198578215] [2022-07-22 11:16:32,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198578215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:32,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:32,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:32,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521919960] [2022-07-22 11:16:32,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:32,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:32,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:32,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:32,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:32,322 INFO L87 Difference]: Start difference. First operand 1974 states and 2940 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:32,395 INFO L93 Difference]: Finished difference Result 4406 states and 6588 transitions. [2022-07-22 11:16:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 199 [2022-07-22 11:16:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:32,402 INFO L225 Difference]: With dead ends: 4406 [2022-07-22 11:16:32,402 INFO L226 Difference]: Without dead ends: 2455 [2022-07-22 11:16:32,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:32,404 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 163 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:32,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 386 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-07-22 11:16:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-07-22 11:16:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2454 states have (on average 1.4910350448247758) internal successors, (3659), 2454 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3659 transitions. [2022-07-22 11:16:32,442 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3659 transitions. Word has length 199 [2022-07-22 11:16:32,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:32,443 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3659 transitions. [2022-07-22 11:16:32,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3659 transitions. [2022-07-22 11:16:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-22 11:16:32,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:32,446 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:32,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 11:16:32,446 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 447893990, now seen corresponding path program 1 times [2022-07-22 11:16:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:32,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78507627] [2022-07-22 11:16:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 11:16:32,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:32,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78507627] [2022-07-22 11:16:32,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78507627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:32,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:32,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:32,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584908059] [2022-07-22 11:16:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:32,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:32,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:32,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:32,569 INFO L87 Difference]: Start difference. First operand 2455 states and 3659 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:32,668 INFO L93 Difference]: Finished difference Result 5368 states and 8026 transitions. [2022-07-22 11:16:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:32,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2022-07-22 11:16:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:32,675 INFO L225 Difference]: With dead ends: 5368 [2022-07-22 11:16:32,675 INFO L226 Difference]: Without dead ends: 2936 [2022-07-22 11:16:32,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:32,678 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 170 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:32,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 385 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2022-07-22 11:16:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2936. [2022-07-22 11:16:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2935 states have (on average 1.4919931856899489) internal successors, (4379), 2935 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4379 transitions. [2022-07-22 11:16:32,727 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4379 transitions. Word has length 238 [2022-07-22 11:16:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:32,727 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 4379 transitions. [2022-07-22 11:16:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4379 transitions. [2022-07-22 11:16:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-22 11:16:32,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:32,753 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:32,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 11:16:32,753 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash 230867452, now seen corresponding path program 1 times [2022-07-22 11:16:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:32,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773525643] [2022-07-22 11:16:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 11:16:32,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:32,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773525643] [2022-07-22 11:16:32,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773525643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:32,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:32,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:32,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644210945] [2022-07-22 11:16:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:32,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:32,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:32,853 INFO L87 Difference]: Start difference. First operand 2936 states and 4379 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:32,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:32,936 INFO L93 Difference]: Finished difference Result 6330 states and 9466 transitions. [2022-07-22 11:16:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:32,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2022-07-22 11:16:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:32,942 INFO L225 Difference]: With dead ends: 6330 [2022-07-22 11:16:32,942 INFO L226 Difference]: Without dead ends: 3417 [2022-07-22 11:16:32,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:32,945 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 171 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:32,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 384 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2022-07-22 11:16:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3417. [2022-07-22 11:16:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3416 states have (on average 1.4929742388758782) internal successors, (5100), 3416 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5100 transitions. [2022-07-22 11:16:33,013 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5100 transitions. Word has length 240 [2022-07-22 11:16:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:33,013 INFO L495 AbstractCegarLoop]: Abstraction has 3417 states and 5100 transitions. [2022-07-22 11:16:33,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5100 transitions. [2022-07-22 11:16:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-22 11:16:33,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:33,018 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:33,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-22 11:16:33,018 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1840467843, now seen corresponding path program 1 times [2022-07-22 11:16:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:33,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673441676] [2022-07-22 11:16:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-07-22 11:16:33,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:33,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673441676] [2022-07-22 11:16:33,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673441676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:33,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:33,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:33,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925324913] [2022-07-22 11:16:33,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:33,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:33,132 INFO L87 Difference]: Start difference. First operand 3417 states and 5100 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:33,241 INFO L93 Difference]: Finished difference Result 7284 states and 10895 transitions. [2022-07-22 11:16:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 272 [2022-07-22 11:16:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:33,247 INFO L225 Difference]: With dead ends: 7284 [2022-07-22 11:16:33,247 INFO L226 Difference]: Without dead ends: 3890 [2022-07-22 11:16:33,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:33,251 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:33,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 593 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-07-22 11:16:33,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3890. [2022-07-22 11:16:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 3889 states have (on average 1.4924145024427873) internal successors, (5804), 3889 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 5804 transitions. [2022-07-22 11:16:33,306 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 5804 transitions. Word has length 272 [2022-07-22 11:16:33,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:33,306 INFO L495 AbstractCegarLoop]: Abstraction has 3890 states and 5804 transitions. [2022-07-22 11:16:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 5804 transitions. [2022-07-22 11:16:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-22 11:16:33,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:33,312 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:33,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-22 11:16:33,312 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:33,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash 943074565, now seen corresponding path program 1 times [2022-07-22 11:16:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:33,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169190467] [2022-07-22 11:16:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:33,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 11:16:33,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:33,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169190467] [2022-07-22 11:16:33,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169190467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:33,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:33,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:33,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148498418] [2022-07-22 11:16:33,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:33,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:33,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:33,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:33,455 INFO L87 Difference]: Start difference. First operand 3890 states and 5804 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:33,543 INFO L93 Difference]: Finished difference Result 8205 states and 12267 transitions. [2022-07-22 11:16:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:33,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 272 [2022-07-22 11:16:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:33,549 INFO L225 Difference]: With dead ends: 8205 [2022-07-22 11:16:33,549 INFO L226 Difference]: Without dead ends: 4338 [2022-07-22 11:16:33,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:33,553 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 161 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:33,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 596 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4338 states. [2022-07-22 11:16:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4338 to 4338. [2022-07-22 11:16:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 1.4913534701406501) internal successors, (6468), 4337 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6468 transitions. [2022-07-22 11:16:33,632 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 6468 transitions. Word has length 272 [2022-07-22 11:16:33,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:33,632 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 6468 transitions. [2022-07-22 11:16:33,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 6468 transitions. [2022-07-22 11:16:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-22 11:16:33,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:33,639 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:33,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-22 11:16:33,639 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash 727620858, now seen corresponding path program 1 times [2022-07-22 11:16:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389976187] [2022-07-22 11:16:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:33,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-07-22 11:16:33,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:33,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389976187] [2022-07-22 11:16:33,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389976187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:33,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:33,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105450764] [2022-07-22 11:16:33,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:33,794 INFO L87 Difference]: Start difference. First operand 4338 states and 6468 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:33,912 INFO L93 Difference]: Finished difference Result 9134 states and 13644 transitions. [2022-07-22 11:16:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:33,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 347 [2022-07-22 11:16:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:33,918 INFO L225 Difference]: With dead ends: 9134 [2022-07-22 11:16:33,919 INFO L226 Difference]: Without dead ends: 4819 [2022-07-22 11:16:33,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:33,923 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:33,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 381 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2022-07-22 11:16:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 4819. [2022-07-22 11:16:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4818 states have (on average 1.4927355749273556) internal successors, (7192), 4818 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 7192 transitions. [2022-07-22 11:16:33,991 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 7192 transitions. Word has length 347 [2022-07-22 11:16:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:33,991 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 7192 transitions. [2022-07-22 11:16:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 7192 transitions. [2022-07-22 11:16:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-22 11:16:34,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:34,000 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:34,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-22 11:16:34,001 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:34,001 INFO L85 PathProgramCache]: Analyzing trace with hash 54456075, now seen corresponding path program 1 times [2022-07-22 11:16:34,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:34,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597732289] [2022-07-22 11:16:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:34,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-07-22 11:16:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:34,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597732289] [2022-07-22 11:16:34,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597732289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:34,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:34,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489620690] [2022-07-22 11:16:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:34,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:34,184 INFO L87 Difference]: Start difference. First operand 4819 states and 7192 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:34,283 INFO L93 Difference]: Finished difference Result 10096 states and 15092 transitions. [2022-07-22 11:16:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2022-07-22 11:16:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:34,290 INFO L225 Difference]: With dead ends: 10096 [2022-07-22 11:16:34,290 INFO L226 Difference]: Without dead ends: 5300 [2022-07-22 11:16:34,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:34,295 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:34,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 380 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2022-07-22 11:16:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5300. [2022-07-22 11:16:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 1.4940554821664465) internal successors, (7917), 5299 states have internal predecessors, (7917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 7917 transitions. [2022-07-22 11:16:34,400 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 7917 transitions. Word has length 388 [2022-07-22 11:16:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:34,400 INFO L495 AbstractCegarLoop]: Abstraction has 5300 states and 7917 transitions. [2022-07-22 11:16:34,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 7917 transitions. [2022-07-22 11:16:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-22 11:16:34,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:34,409 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:34,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-22 11:16:34,409 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1652971603, now seen corresponding path program 1 times [2022-07-22 11:16:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:34,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55528546] [2022-07-22 11:16:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:34,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2022-07-22 11:16:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:34,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55528546] [2022-07-22 11:16:34,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55528546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:34,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:34,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:34,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235370128] [2022-07-22 11:16:34,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:34,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:34,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:34,577 INFO L87 Difference]: Start difference. First operand 5300 states and 7917 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:34,677 INFO L93 Difference]: Finished difference Result 11051 states and 16531 transitions. [2022-07-22 11:16:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:34,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2022-07-22 11:16:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:34,713 INFO L225 Difference]: With dead ends: 11051 [2022-07-22 11:16:34,713 INFO L226 Difference]: Without dead ends: 5774 [2022-07-22 11:16:34,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:34,717 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:34,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 593 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:16:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5774 states. [2022-07-22 11:16:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5774 to 5774. [2022-07-22 11:16:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5774 states, 5773 states have (on average 1.4935042438939892) internal successors, (8622), 5773 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5774 states to 5774 states and 8622 transitions. [2022-07-22 11:16:34,792 INFO L78 Accepts]: Start accepts. Automaton has 5774 states and 8622 transitions. Word has length 395 [2022-07-22 11:16:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:34,793 INFO L495 AbstractCegarLoop]: Abstraction has 5774 states and 8622 transitions. [2022-07-22 11:16:34,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5774 states and 8622 transitions. [2022-07-22 11:16:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-07-22 11:16:34,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:34,801 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:34,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-22 11:16:34,802 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1960737092, now seen corresponding path program 1 times [2022-07-22 11:16:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:34,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008181105] [2022-07-22 11:16:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:34,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2119 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2022-07-22 11:16:35,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:35,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008181105] [2022-07-22 11:16:35,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008181105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:35,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:35,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178385379] [2022-07-22 11:16:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:35,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:35,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:35,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:35,006 INFO L87 Difference]: Start difference. First operand 5774 states and 8622 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:35,121 INFO L93 Difference]: Finished difference Result 12006 states and 17952 transitions. [2022-07-22 11:16:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 471 [2022-07-22 11:16:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:35,131 INFO L225 Difference]: With dead ends: 12006 [2022-07-22 11:16:35,131 INFO L226 Difference]: Without dead ends: 6255 [2022-07-22 11:16:35,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:35,138 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:35,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 378 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2022-07-22 11:16:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 6255. [2022-07-22 11:16:35,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6255 states, 6254 states have (on average 1.4948832747041894) internal successors, (9349), 6254 states have internal predecessors, (9349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 9349 transitions. [2022-07-22 11:16:35,227 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 9349 transitions. Word has length 471 [2022-07-22 11:16:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:35,228 INFO L495 AbstractCegarLoop]: Abstraction has 6255 states and 9349 transitions. [2022-07-22 11:16:35,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 9349 transitions. [2022-07-22 11:16:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-07-22 11:16:35,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:35,237 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:35,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-22 11:16:35,238 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1847595616, now seen corresponding path program 1 times [2022-07-22 11:16:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:35,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841498445] [2022-07-22 11:16:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 744 proven. 7 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2022-07-22 11:16:35,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:35,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841498445] [2022-07-22 11:16:35,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841498445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:16:35,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810579297] [2022-07-22 11:16:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:35,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:16:35,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:16:35,467 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) [2022-07-22 11:16:35,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 11:16:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:36,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 2355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:16:36,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:16:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2022-07-22 11:16:36,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:16:36,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810579297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:36,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:16:36,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 11:16:36,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017296660] [2022-07-22 11:16:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:36,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:36,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:16:36,545 INFO L87 Difference]: Start difference. First operand 6255 states and 9349 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:36,680 INFO L93 Difference]: Finished difference Result 12968 states and 19406 transitions. [2022-07-22 11:16:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:36,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 513 [2022-07-22 11:16:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:36,690 INFO L225 Difference]: With dead ends: 12968 [2022-07-22 11:16:36,691 INFO L226 Difference]: Without dead ends: 6736 [2022-07-22 11:16:36,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:16:36,699 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:36,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 377 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2022-07-22 11:16:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 6736. [2022-07-22 11:16:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6736 states, 6735 states have (on average 1.4962138084632517) internal successors, (10077), 6735 states have internal predecessors, (10077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 10077 transitions. [2022-07-22 11:16:36,825 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 10077 transitions. Word has length 513 [2022-07-22 11:16:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:36,826 INFO L495 AbstractCegarLoop]: Abstraction has 6736 states and 10077 transitions. [2022-07-22 11:16:36,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 10077 transitions. [2022-07-22 11:16:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-07-22 11:16:36,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:36,841 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:36,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 11:16:37,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-22 11:16:37,052 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:37,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -138901474, now seen corresponding path program 1 times [2022-07-22 11:16:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:37,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426912155] [2022-07-22 11:16:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:37,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2022-07-22 11:16:37,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:37,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426912155] [2022-07-22 11:16:37,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426912155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:37,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:37,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:37,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632456911] [2022-07-22 11:16:37,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:37,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:37,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:37,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:37,274 INFO L87 Difference]: Start difference. First operand 6736 states and 10077 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:37,806 INFO L93 Difference]: Finished difference Result 14638 states and 21839 transitions. [2022-07-22 11:16:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 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 521 [2022-07-22 11:16:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:37,817 INFO L225 Difference]: With dead ends: 14638 [2022-07-22 11:16:37,817 INFO L226 Difference]: Without dead ends: 7925 [2022-07-22 11:16:37,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:37,824 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 75 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:37,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 725 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:16:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7925 states. [2022-07-22 11:16:37,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7925 to 7310. [2022-07-22 11:16:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7310 states, 7309 states have (on average 1.49746887399097) internal successors, (10945), 7309 states have internal predecessors, (10945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7310 states to 7310 states and 10945 transitions. [2022-07-22 11:16:37,997 INFO L78 Accepts]: Start accepts. Automaton has 7310 states and 10945 transitions. Word has length 521 [2022-07-22 11:16:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:37,998 INFO L495 AbstractCegarLoop]: Abstraction has 7310 states and 10945 transitions. [2022-07-22 11:16:37,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7310 states and 10945 transitions. [2022-07-22 11:16:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-07-22 11:16:38,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:38,008 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:38,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-22 11:16:38,008 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -930711262, now seen corresponding path program 1 times [2022-07-22 11:16:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160102864] [2022-07-22 11:16:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 2135 trivial. 0 not checked. [2022-07-22 11:16:38,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:38,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160102864] [2022-07-22 11:16:38,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160102864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:38,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:38,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:38,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844872527] [2022-07-22 11:16:38,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:38,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:38,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:38,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:38,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:38,197 INFO L87 Difference]: Start difference. First operand 7310 states and 10945 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:38,329 INFO L93 Difference]: Finished difference Result 15113 states and 22651 transitions. [2022-07-22 11:16:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 521 [2022-07-22 11:16:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:38,339 INFO L225 Difference]: With dead ends: 15113 [2022-07-22 11:16:38,339 INFO L226 Difference]: Without dead ends: 7826 [2022-07-22 11:16:38,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:38,346 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:38,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 593 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2022-07-22 11:16:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7826. [2022-07-22 11:16:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7826 states, 7825 states have (on average 1.4968690095846646) internal successors, (11713), 7825 states have internal predecessors, (11713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7826 states to 7826 states and 11713 transitions. [2022-07-22 11:16:38,453 INFO L78 Accepts]: Start accepts. Automaton has 7826 states and 11713 transitions. Word has length 521 [2022-07-22 11:16:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:38,454 INFO L495 AbstractCegarLoop]: Abstraction has 7826 states and 11713 transitions. [2022-07-22 11:16:38,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 7826 states and 11713 transitions. [2022-07-22 11:16:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-07-22 11:16:38,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:38,464 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 8, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:38,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-22 11:16:38,464 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:38,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash -296644096, now seen corresponding path program 1 times [2022-07-22 11:16:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:38,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243478611] [2022-07-22 11:16:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 849 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2022-07-22 11:16:38,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:38,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243478611] [2022-07-22 11:16:38,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243478611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:38,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:38,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:38,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686866883] [2022-07-22 11:16:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:38,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:38,717 INFO L87 Difference]: Start difference. First operand 7826 states and 11713 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:38,849 INFO L93 Difference]: Finished difference Result 16151 states and 24196 transitions. [2022-07-22 11:16:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 598 [2022-07-22 11:16:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:38,858 INFO L225 Difference]: With dead ends: 16151 [2022-07-22 11:16:38,858 INFO L226 Difference]: Without dead ends: 8348 [2022-07-22 11:16:38,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:38,865 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:38,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 375 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8348 states. [2022-07-22 11:16:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8348 to 8348. [2022-07-22 11:16:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8348 states, 8347 states have (on average 1.498143045405535) internal successors, (12505), 8347 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8348 states to 8348 states and 12505 transitions. [2022-07-22 11:16:38,989 INFO L78 Accepts]: Start accepts. Automaton has 8348 states and 12505 transitions. Word has length 598 [2022-07-22 11:16:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:38,990 INFO L495 AbstractCegarLoop]: Abstraction has 8348 states and 12505 transitions. [2022-07-22 11:16:38,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 8348 states and 12505 transitions. [2022-07-22 11:16:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-07-22 11:16:39,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:39,003 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 9, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:39,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-22 11:16:39,003 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:39,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash -764735426, now seen corresponding path program 1 times [2022-07-22 11:16:39,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:39,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699466536] [2022-07-22 11:16:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:39,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3915 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 3001 trivial. 0 not checked. [2022-07-22 11:16:39,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:39,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699466536] [2022-07-22 11:16:39,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699466536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:39,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:39,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548193981] [2022-07-22 11:16:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:39,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:39,286 INFO L87 Difference]: Start difference. First operand 8348 states and 12505 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:39,425 INFO L93 Difference]: Finished difference Result 17195 states and 25780 transitions. [2022-07-22 11:16:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:39,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 641 [2022-07-22 11:16:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:39,434 INFO L225 Difference]: With dead ends: 17195 [2022-07-22 11:16:39,434 INFO L226 Difference]: Without dead ends: 8870 [2022-07-22 11:16:39,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:39,441 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:39,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 374 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8870 states. [2022-07-22 11:16:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8870 to 8870. [2022-07-22 11:16:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8869 states have (on average 1.4993798624422146) internal successors, (13298), 8869 states have internal predecessors, (13298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 13298 transitions. [2022-07-22 11:16:39,565 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 13298 transitions. Word has length 641 [2022-07-22 11:16:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:39,565 INFO L495 AbstractCegarLoop]: Abstraction has 8870 states and 13298 transitions. [2022-07-22 11:16:39,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 13298 transitions. [2022-07-22 11:16:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2022-07-22 11:16:39,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:39,577 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:39,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-22 11:16:39,577 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:39,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1181033531, now seen corresponding path program 1 times [2022-07-22 11:16:39,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:39,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346172501] [2022-07-22 11:16:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-07-22 11:16:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346172501] [2022-07-22 11:16:39,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346172501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:39,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:39,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:39,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861185911] [2022-07-22 11:16:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:39,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:39,798 INFO L87 Difference]: Start difference. First operand 8870 states and 13298 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:40,013 INFO L93 Difference]: Finished difference Result 18234 states and 27359 transitions. [2022-07-22 11:16:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:40,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 650 [2022-07-22 11:16:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:40,025 INFO L225 Difference]: With dead ends: 18234 [2022-07-22 11:16:40,025 INFO L226 Difference]: Without dead ends: 9387 [2022-07-22 11:16:40,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:40,034 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:40,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 593 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9387 states. [2022-07-22 11:16:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9387 to 9387. [2022-07-22 11:16:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9387 states, 9386 states have (on average 1.4987215001065417) internal successors, (14067), 9386 states have internal predecessors, (14067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 14067 transitions. [2022-07-22 11:16:40,205 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 14067 transitions. Word has length 650 [2022-07-22 11:16:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:40,206 INFO L495 AbstractCegarLoop]: Abstraction has 9387 states and 14067 transitions. [2022-07-22 11:16:40,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 14067 transitions. [2022-07-22 11:16:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2022-07-22 11:16:40,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:40,219 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 18, 17, 17, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 11, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-22 11:16:40,220 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:40,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:40,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1426739437, now seen corresponding path program 1 times [2022-07-22 11:16:40,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:40,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721262309] [2022-07-22 11:16:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:40,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5037 backedges. 1058 proven. 0 refuted. 0 times theorem prover too weak. 3979 trivial. 0 not checked. [2022-07-22 11:16:40,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:40,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721262309] [2022-07-22 11:16:40,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721262309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:40,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:40,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055329494] [2022-07-22 11:16:40,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:40,524 INFO L87 Difference]: Start difference. First operand 9387 states and 14067 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:40,705 INFO L93 Difference]: Finished difference Result 19273 states and 28904 transitions. [2022-07-22 11:16:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 728 [2022-07-22 11:16:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:40,715 INFO L225 Difference]: With dead ends: 19273 [2022-07-22 11:16:40,716 INFO L226 Difference]: Without dead ends: 9909 [2022-07-22 11:16:40,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:40,723 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:40,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 372 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9909 states. [2022-07-22 11:16:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9909 to 9909. [2022-07-22 11:16:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9909 states, 9908 states have (on average 1.5) internal successors, (14862), 9908 states have internal predecessors, (14862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9909 states to 9909 states and 14862 transitions. [2022-07-22 11:16:40,895 INFO L78 Accepts]: Start accepts. Automaton has 9909 states and 14862 transitions. Word has length 728 [2022-07-22 11:16:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:40,895 INFO L495 AbstractCegarLoop]: Abstraction has 9909 states and 14862 transitions. [2022-07-22 11:16:40,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9909 states and 14862 transitions. [2022-07-22 11:16:40,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2022-07-22 11:16:40,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:40,914 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 12, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-22 11:16:40,915 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1609533332, now seen corresponding path program 1 times [2022-07-22 11:16:40,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610100261] [2022-07-22 11:16:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:40,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5655 backedges. 1122 proven. 0 refuted. 0 times theorem prover too weak. 4533 trivial. 0 not checked. [2022-07-22 11:16:41,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:41,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610100261] [2022-07-22 11:16:41,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610100261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:41,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:41,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:16:41,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49769062] [2022-07-22 11:16:41,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:41,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:16:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:16:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:41,223 INFO L87 Difference]: Start difference. First operand 9909 states and 14862 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:41,358 INFO L93 Difference]: Finished difference Result 10433 states and 15660 transitions. [2022-07-22 11:16:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:16:41,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 772 [2022-07-22 11:16:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:41,370 INFO L225 Difference]: With dead ends: 10433 [2022-07-22 11:16:41,370 INFO L226 Difference]: Without dead ends: 10431 [2022-07-22 11:16:41,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:16:41,375 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:41,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 371 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:16:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2022-07-22 11:16:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2022-07-22 11:16:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 10430 states have (on average 1.5012464046021092) internal successors, (15658), 10430 states have internal predecessors, (15658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 15658 transitions. [2022-07-22 11:16:41,553 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 15658 transitions. Word has length 772 [2022-07-22 11:16:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:41,553 INFO L495 AbstractCegarLoop]: Abstraction has 10431 states and 15658 transitions. [2022-07-22 11:16:41,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 15658 transitions. [2022-07-22 11:16:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2022-07-22 11:16:41,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:41,565 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:41,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-22 11:16:41,566 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:41,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash -903556745, now seen corresponding path program 1 times [2022-07-22 11:16:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:41,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56353416] [2022-07-22 11:16:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 3657 proven. 480 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2022-07-22 11:16:42,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:42,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56353416] [2022-07-22 11:16:42,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56353416] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:16:42,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265711635] [2022-07-22 11:16:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:42,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:16:42,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:16:42,306 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) [2022-07-22 11:16:42,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 11:16:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:43,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 11:16:43,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:16:43,599 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:16:43,599 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:16:43,677 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-22 11:16:43,678 INFO L390 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-22 11:16:43,718 INFO L390 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 20 treesize of output 8 [2022-07-22 11:16:43,742 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:16:43,742 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:16:43,808 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:16:43,808 INFO L390 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 19 treesize of output 7 [2022-07-22 11:16:43,823 INFO L390 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 [2022-07-22 11:16:43,851 INFO L390 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 31 treesize of output 19 [2022-07-22 11:16:43,855 INFO L390 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 19 treesize of output 13 [2022-07-22 11:16:43,884 INFO L356 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-07-22 11:16:43,884 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 55 [2022-07-22 11:16:43,934 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-22 11:16:43,934 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2022-07-22 11:16:44,090 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:16:44,090 INFO L390 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 29 treesize of output 11 [2022-07-22 11:16:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 2342 proven. 586 refuted. 0 times theorem prover too weak. 2774 trivial. 0 not checked. [2022-07-22 11:16:44,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:16:44,259 INFO L390 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 77 treesize of output 53 [2022-07-22 11:16:44,262 INFO L390 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 53 treesize of output 41 [2022-07-22 11:16:47,411 INFO L390 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 100 treesize of output 88 [2022-07-22 11:16:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 2152 proven. 0 refuted. 0 times theorem prover too weak. 3550 trivial. 0 not checked. [2022-07-22 11:16:47,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265711635] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 11:16:47,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:16:47,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 13] total 25 [2022-07-22 11:16:47,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571439803] [2022-07-22 11:16:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:47,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 11:16:47,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 11:16:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=519, Unknown=1, NotChecked=0, Total=600 [2022-07-22 11:16:47,423 INFO L87 Difference]: Start difference. First operand 10431 states and 15658 transitions. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:56,798 INFO L93 Difference]: Finished difference Result 30466 states and 45757 transitions. [2022-07-22 11:16:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 11:16:56,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 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 782 [2022-07-22 11:16:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:56,820 INFO L225 Difference]: With dead ends: 30466 [2022-07-22 11:16:56,821 INFO L226 Difference]: Without dead ends: 20058 [2022-07-22 11:16:56,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1556 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=109, Invalid=700, Unknown=3, NotChecked=0, Total=812 [2022-07-22 11:16:56,833 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 447 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:56,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1035 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 528 Invalid, 0 Unknown, 263 Unchecked, 2.0s Time] [2022-07-22 11:16:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20058 states. [2022-07-22 11:16:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20058 to 17355. [2022-07-22 11:16:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17355 states, 17354 states have (on average 1.5145211478621643) internal successors, (26283), 17354 states have internal predecessors, (26283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17355 states to 17355 states and 26283 transitions. [2022-07-22 11:16:57,117 INFO L78 Accepts]: Start accepts. Automaton has 17355 states and 26283 transitions. Word has length 782 [2022-07-22 11:16:57,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:16:57,117 INFO L495 AbstractCegarLoop]: Abstraction has 17355 states and 26283 transitions. [2022-07-22 11:16:57,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 17355 states and 26283 transitions. [2022-07-22 11:16:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2022-07-22 11:16:57,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:16:57,137 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:16:57,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 11:16:57,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:16:57,340 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:16:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:16:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1153034768, now seen corresponding path program 1 times [2022-07-22 11:16:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:16:57,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946843678] [2022-07-22 11:16:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:16:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:16:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:16:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5717 backedges. 3231 proven. 0 refuted. 0 times theorem prover too weak. 2486 trivial. 0 not checked. [2022-07-22 11:16:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:16:57,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946843678] [2022-07-22 11:16:57,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946843678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:16:57,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:16:57,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:16:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597346399] [2022-07-22 11:16:57,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:16:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:16:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:16:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:16:57,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:16:57,625 INFO L87 Difference]: Start difference. First operand 17355 states and 26283 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:16:59,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:16:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:16:59,774 INFO L93 Difference]: Finished difference Result 36123 states and 54530 transitions. [2022-07-22 11:16:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:16:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 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 785 [2022-07-22 11:16:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:16:59,795 INFO L225 Difference]: With dead ends: 36123 [2022-07-22 11:16:59,795 INFO L226 Difference]: Without dead ends: 18791 [2022-07-22 11:16:59,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:16:59,809 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 73 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:16:59,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 723 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 11:16:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18791 states. [2022-07-22 11:17:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18791 to 17375. [2022-07-22 11:17:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17375 states, 17374 states have (on average 1.513928859214919) internal successors, (26303), 17374 states have internal predecessors, (26303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 26303 transitions. [2022-07-22 11:17:00,152 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 26303 transitions. Word has length 785 [2022-07-22 11:17:00,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:00,152 INFO L495 AbstractCegarLoop]: Abstraction has 17375 states and 26303 transitions. [2022-07-22 11:17:00,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 26303 transitions. [2022-07-22 11:17:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2022-07-22 11:17:00,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:00,172 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:00,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-22 11:17:00,172 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash 855496686, now seen corresponding path program 1 times [2022-07-22 11:17:00,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:00,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119973212] [2022-07-22 11:17:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:00,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6836 backedges. 3731 proven. 187 refuted. 0 times theorem prover too weak. 2918 trivial. 0 not checked. [2022-07-22 11:17:00,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:00,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119973212] [2022-07-22 11:17:00,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119973212] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:17:00,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700736769] [2022-07-22 11:17:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:00,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:17:00,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:17:00,468 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) [2022-07-22 11:17:00,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 11:17:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:01,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 3547 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 11:17:01,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:17:01,769 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:17:01,770 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:17:01,796 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:17:01,796 INFO L390 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 19 treesize of output 7 [2022-07-22 11:17:01,809 INFO L390 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 [2022-07-22 11:17:01,829 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:17:01,829 INFO L390 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 23 treesize of output 22 [2022-07-22 11:17:01,858 INFO L390 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 19 treesize of output 7 [2022-07-22 11:17:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6836 backedges. 2143 proven. 304 refuted. 0 times theorem prover too weak. 4389 trivial. 0 not checked. [2022-07-22 11:17:01,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:17:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6836 backedges. 2148 proven. 0 refuted. 0 times theorem prover too weak. 4688 trivial. 0 not checked. [2022-07-22 11:17:01,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700736769] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 11:17:01,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:17:01,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-22 11:17:01,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342261331] [2022-07-22 11:17:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:01,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:01,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:01,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:17:01,914 INFO L87 Difference]: Start difference. First operand 17375 states and 26303 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:03,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:03,738 INFO L93 Difference]: Finished difference Result 37176 states and 56015 transitions. [2022-07-22 11:17:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:03,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 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 848 [2022-07-22 11:17:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:03,761 INFO L225 Difference]: With dead ends: 37176 [2022-07-22 11:17:03,761 INFO L226 Difference]: Without dead ends: 19824 [2022-07-22 11:17:03,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1695 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:17:03,775 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 144 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:03,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 473 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:17:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19824 states. [2022-07-22 11:17:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19824 to 17375. [2022-07-22 11:17:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17375 states, 17374 states have (on average 1.4947047312075514) internal successors, (25969), 17374 states have internal predecessors, (25969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 25969 transitions. [2022-07-22 11:17:04,191 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 25969 transitions. Word has length 848 [2022-07-22 11:17:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:04,191 INFO L495 AbstractCegarLoop]: Abstraction has 17375 states and 25969 transitions. [2022-07-22 11:17:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 25969 transitions. [2022-07-22 11:17:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2022-07-22 11:17:04,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:04,213 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:04,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 11:17:04,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:17:04,418 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1255240550, now seen corresponding path program 1 times [2022-07-22 11:17:04,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:04,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543222564] [2022-07-22 11:17:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6944 backedges. 3949 proven. 46 refuted. 0 times theorem prover too weak. 2949 trivial. 0 not checked. [2022-07-22 11:17:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543222564] [2022-07-22 11:17:04,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543222564] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:17:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177046788] [2022-07-22 11:17:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:17:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:17:04,761 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) [2022-07-22 11:17:04,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 11:17:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:06,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 11:17:06,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:17:06,159 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:17:06,160 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:17:06,191 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:17:06,192 INFO L390 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 19 treesize of output 7 [2022-07-22 11:17:06,220 INFO L390 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 20 treesize of output 8 [2022-07-22 11:17:06,232 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:17:06,232 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:17:06,291 INFO L390 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 19 treesize of output 7 [2022-07-22 11:17:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6944 backedges. 3944 proven. 238 refuted. 0 times theorem prover too weak. 2762 trivial. 0 not checked. [2022-07-22 11:17:06,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:17:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6944 backedges. 3917 proven. 0 refuted. 0 times theorem prover too weak. 3027 trivial. 0 not checked. [2022-07-22 11:17:06,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177046788] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 11:17:06,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:17:06,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 10 [2022-07-22 11:17:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142428402] [2022-07-22 11:17:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:06,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:06,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:17:06,358 INFO L87 Difference]: Start difference. First operand 17375 states and 25969 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:07,750 INFO L93 Difference]: Finished difference Result 37176 states and 55347 transitions. [2022-07-22 11:17:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:07,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 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 848 [2022-07-22 11:17:07,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:07,770 INFO L225 Difference]: With dead ends: 37176 [2022-07-22 11:17:07,770 INFO L226 Difference]: Without dead ends: 19824 [2022-07-22 11:17:07,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1694 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 11:17:07,783 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 125 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:07,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 583 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:17:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19824 states. [2022-07-22 11:17:08,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19824 to 17395. [2022-07-22 11:17:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17395 states, 17394 states have (on average 1.4941359089341153) internal successors, (25989), 17394 states have internal predecessors, (25989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17395 states to 17395 states and 25989 transitions. [2022-07-22 11:17:08,180 INFO L78 Accepts]: Start accepts. Automaton has 17395 states and 25989 transitions. Word has length 848 [2022-07-22 11:17:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:08,181 INFO L495 AbstractCegarLoop]: Abstraction has 17395 states and 25989 transitions. [2022-07-22 11:17:08,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 17395 states and 25989 transitions. [2022-07-22 11:17:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2022-07-22 11:17:08,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:08,199 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:08,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 11:17:08,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-07-22 11:17:08,406 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:08,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash -653887438, now seen corresponding path program 1 times [2022-07-22 11:17:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:08,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094299326] [2022-07-22 11:17:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6896 backedges. 3778 proven. 0 refuted. 0 times theorem prover too weak. 3118 trivial. 0 not checked. [2022-07-22 11:17:08,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:08,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094299326] [2022-07-22 11:17:08,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094299326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:08,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:08,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:08,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369874438] [2022-07-22 11:17:08,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:08,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:08,666 INFO L87 Difference]: Start difference. First operand 17395 states and 25989 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:10,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:10,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:10,493 INFO L93 Difference]: Finished difference Result 36035 states and 53691 transitions. [2022-07-22 11:17:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:10,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 851 [2022-07-22 11:17:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:10,513 INFO L225 Difference]: With dead ends: 36035 [2022-07-22 11:17:10,513 INFO L226 Difference]: Without dead ends: 18663 [2022-07-22 11:17:10,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:10,529 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 86 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:10,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 713 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:17:10,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18663 states. [2022-07-22 11:17:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18663 to 17395. [2022-07-22 11:17:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17395 states, 17394 states have (on average 1.4920087386455099) internal successors, (25952), 17394 states have internal predecessors, (25952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17395 states to 17395 states and 25952 transitions. [2022-07-22 11:17:10,820 INFO L78 Accepts]: Start accepts. Automaton has 17395 states and 25952 transitions. Word has length 851 [2022-07-22 11:17:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:10,821 INFO L495 AbstractCegarLoop]: Abstraction has 17395 states and 25952 transitions. [2022-07-22 11:17:10,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 17395 states and 25952 transitions. [2022-07-22 11:17:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2022-07-22 11:17:10,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:10,839 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:10,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-22 11:17:10,839 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash -570468491, now seen corresponding path program 1 times [2022-07-22 11:17:10,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:10,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951235874] [2022-07-22 11:17:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:10,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6959 backedges. 3806 proven. 0 refuted. 0 times theorem prover too weak. 3153 trivial. 0 not checked. [2022-07-22 11:17:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951235874] [2022-07-22 11:17:11,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951235874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:11,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:11,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533778812] [2022-07-22 11:17:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:11,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:11,115 INFO L87 Difference]: Start difference. First operand 17395 states and 25952 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:12,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:13,296 INFO L93 Difference]: Finished difference Result 36247 states and 53990 transitions. [2022-07-22 11:17:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 851 [2022-07-22 11:17:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:13,315 INFO L225 Difference]: With dead ends: 36247 [2022-07-22 11:17:13,315 INFO L226 Difference]: Without dead ends: 18875 [2022-07-22 11:17:13,324 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:17:13,325 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 29 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:13,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 647 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 11:17:13,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18875 states. [2022-07-22 11:17:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18875 to 18357. [2022-07-22 11:17:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18357 states, 18356 states have (on average 1.4883961647417738) internal successors, (27321), 18356 states have internal predecessors, (27321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18357 states to 18357 states and 27321 transitions. [2022-07-22 11:17:13,641 INFO L78 Accepts]: Start accepts. Automaton has 18357 states and 27321 transitions. Word has length 851 [2022-07-22 11:17:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:13,642 INFO L495 AbstractCegarLoop]: Abstraction has 18357 states and 27321 transitions. [2022-07-22 11:17:13,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 18357 states and 27321 transitions. [2022-07-22 11:17:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2022-07-22 11:17:13,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:13,663 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 21, 21, 20, 20, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:13,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-22 11:17:13,663 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:13,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 407021035, now seen corresponding path program 1 times [2022-07-22 11:17:13,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:13,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296478385] [2022-07-22 11:17:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:13,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 3954 proven. 0 refuted. 0 times theorem prover too weak. 3221 trivial. 0 not checked. [2022-07-22 11:17:13,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:13,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296478385] [2022-07-22 11:17:13,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296478385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:13,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:13,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972907815] [2022-07-22 11:17:13,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:13,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:13,938 INFO L87 Difference]: Start difference. First operand 18357 states and 27321 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:14,555 INFO L93 Difference]: Finished difference Result 37171 states and 55294 transitions. [2022-07-22 11:17:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:14,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 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 860 [2022-07-22 11:17:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:14,576 INFO L225 Difference]: With dead ends: 37171 [2022-07-22 11:17:14,576 INFO L226 Difference]: Without dead ends: 18837 [2022-07-22 11:17:14,590 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:17:14,590 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 43 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:14,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 662 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18837 states. [2022-07-22 11:17:14,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18837 to 18357. [2022-07-22 11:17:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18357 states, 18356 states have (on average 1.4873066027456963) internal successors, (27301), 18356 states have internal predecessors, (27301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18357 states to 18357 states and 27301 transitions. [2022-07-22 11:17:14,985 INFO L78 Accepts]: Start accepts. Automaton has 18357 states and 27301 transitions. Word has length 860 [2022-07-22 11:17:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:14,985 INFO L495 AbstractCegarLoop]: Abstraction has 18357 states and 27301 transitions. [2022-07-22 11:17:14,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 18357 states and 27301 transitions. [2022-07-22 11:17:15,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2022-07-22 11:17:15,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:15,007 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 21, 21, 20, 20, 19, 19, 19, 19, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:15,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-22 11:17:15,007 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:15,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1326089202, now seen corresponding path program 1 times [2022-07-22 11:17:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:15,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703118517] [2022-07-22 11:17:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:15,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 1932 proven. 5072 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-22 11:17:18,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:18,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703118517] [2022-07-22 11:17:18,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703118517] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:17:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242598394] [2022-07-22 11:17:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:18,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:17:18,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:17:18,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:17:18,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 11:17:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:19,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 3583 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-22 11:17:19,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:17:19,784 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:17:19,785 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:17:19,881 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-22 11:17:19,881 INFO L390 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-22 11:17:19,955 INFO L390 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 20 treesize of output 8 [2022-07-22 11:17:19,985 INFO L390 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 6 treesize of output 5 [2022-07-22 11:17:20,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:20,023 INFO L390 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 45 treesize of output 44 [2022-07-22 11:17:20,045 INFO L356 Elim1Store]: treesize reduction 72, result has 40.0 percent of original size [2022-07-22 11:17:20,045 INFO L390 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 60 [2022-07-22 11:17:20,055 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:17:20,055 INFO L390 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 73 treesize of output 66 [2022-07-22 11:17:20,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:20,515 INFO L390 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 64 treesize of output 57 [2022-07-22 11:17:20,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:20,534 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-22 11:17:20,535 INFO L390 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2022-07-22 11:17:20,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:20,539 INFO L390 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 58 treesize of output 51 [2022-07-22 11:17:20,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:20,620 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-22 11:17:20,620 INFO L390 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 2 case distinctions, treesize of input 44 treesize of output 68 [2022-07-22 11:17:20,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:20,624 INFO L390 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 80 treesize of output 67 [2022-07-22 11:17:20,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:20,627 INFO L390 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 80 treesize of output 67 [2022-07-22 11:17:21,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:21,162 INFO L356 Elim1Store]: treesize reduction 60, result has 45.9 percent of original size [2022-07-22 11:17:21,163 INFO L390 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 160 treesize of output 155 [2022-07-22 11:17:21,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:21,200 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-22 11:17:21,200 INFO L390 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 137 treesize of output 132 [2022-07-22 11:17:21,242 INFO L356 Elim1Store]: treesize reduction 45, result has 52.6 percent of original size [2022-07-22 11:17:21,243 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 73 [2022-07-22 11:17:24,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 295 [2022-07-22 11:17:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:24,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 295 [2022-07-22 11:17:24,561 INFO L356 Elim1Store]: treesize reduction 231, result has 26.4 percent of original size [2022-07-22 11:17:24,561 INFO L390 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 367 treesize of output 386 [2022-07-22 11:17:32,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,724 INFO L390 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 362 treesize of output 286 [2022-07-22 11:17:32,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,731 INFO L390 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 362 treesize of output 286 [2022-07-22 11:17:32,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,753 INFO L356 Elim1Store]: treesize reduction 105, result has 29.1 percent of original size [2022-07-22 11:17:32,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 371 treesize of output 368 [2022-07-22 11:17:32,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,935 INFO L390 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 139 treesize of output 97 [2022-07-22 11:17:32,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:17:32,939 INFO L390 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 97 treesize of output 61 [2022-07-22 11:17:32,985 INFO L356 Elim1Store]: treesize reduction 151, result has 29.4 percent of original size [2022-07-22 11:17:32,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 89 treesize of output 123 [2022-07-22 11:17:33,057 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-22 11:17:33,058 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 35 [2022-07-22 11:17:33,131 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:17:33,131 INFO L390 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 29 treesize of output 11 [2022-07-22 11:17:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 2322 proven. 666 refuted. 0 times theorem prover too weak. 4370 trivial. 0 not checked. [2022-07-22 11:17:33,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:17:36,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:17:36,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:17:36,793 INFO L390 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 714 treesize of output 552 [2022-07-22 11:17:36,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:17:36,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:17:36,799 INFO L390 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 924 treesize of output 768 [2022-07-22 11:17:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 2453 proven. 141 refuted. 0 times theorem prover too weak. 4764 trivial. 0 not checked. [2022-07-22 11:17:41,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242598394] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:17:41,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 11:17:41,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 13] total 52 [2022-07-22 11:17:41,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095480594] [2022-07-22 11:17:41,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 11:17:41,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-22 11:17:41,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-22 11:17:41,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2365, Unknown=2, NotChecked=0, Total=2652 [2022-07-22 11:17:41,106 INFO L87 Difference]: Start difference. First operand 18357 states and 27301 transitions. Second operand has 52 states, 52 states have (on average 19.53846153846154) internal successors, (1016), 52 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:43,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:44,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:45,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:47,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:49,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:52,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:54,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:56,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:58,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:00,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:19:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:16,326 INFO L93 Difference]: Finished difference Result 297571 states and 433321 transitions. [2022-07-22 11:19:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 483 states. [2022-07-22 11:19:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 19.53846153846154) internal successors, (1016), 52 states have internal predecessors, (1016), 0 states have call successors, (0), 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 869 [2022-07-22 11:19:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:16,934 INFO L225 Difference]: With dead ends: 297571 [2022-07-22 11:19:16,935 INFO L226 Difference]: Without dead ends: 279237 [2022-07-22 11:19:17,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2755 GetRequests, 2134 SyntacticMatches, 104 SemanticMatches, 517 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 143853 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=23041, Invalid=245799, Unknown=2, NotChecked=0, Total=268842 [2022-07-22 11:19:17,177 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 11906 mSDsluCounter, 27649 mSDsCounter, 0 mSdLazyCounter, 19948 mSolverCounterSat, 2059 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11906 SdHoareTripleChecker+Valid, 29059 SdHoareTripleChecker+Invalid, 26349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2059 IncrementalHoareTripleChecker+Valid, 19948 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 4337 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:17,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11906 Valid, 29059 Invalid, 26349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2059 Valid, 19948 Invalid, 5 Unknown, 4337 Unchecked, 41.6s Time] [2022-07-22 11:19:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279237 states. [2022-07-22 11:19:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279237 to 174646. [2022-07-22 11:19:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174646 states, 174645 states have (on average 1.4717512668556214) internal successors, (257034), 174645 states have internal predecessors, (257034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174646 states to 174646 states and 257034 transitions. [2022-07-22 11:19:23,293 INFO L78 Accepts]: Start accepts. Automaton has 174646 states and 257034 transitions. Word has length 869 [2022-07-22 11:19:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:19:23,293 INFO L495 AbstractCegarLoop]: Abstraction has 174646 states and 257034 transitions. [2022-07-22 11:19:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 19.53846153846154) internal successors, (1016), 52 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 174646 states and 257034 transitions. [2022-07-22 11:19:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2022-07-22 11:19:23,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:19:23,693 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 22, 21, 21, 20, 20, 19, 19, 19, 19, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:19:23,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 11:19:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-07-22 11:19:23,893 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:19:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:19:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 774626993, now seen corresponding path program 1 times [2022-07-22 11:19:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:19:23,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354488406] [2022-07-22 11:19:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:19:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 1361 proven. 0 refuted. 0 times theorem prover too weak. 5997 trivial. 0 not checked. [2022-07-22 11:19:24,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:19:24,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354488406] [2022-07-22 11:19:24,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354488406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:19:24,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:19:24,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:19:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662009474] [2022-07-22 11:19:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:19:24,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:19:24,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:19:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:19:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:19:24,199 INFO L87 Difference]: Start difference. First operand 174646 states and 257034 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:25,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:19:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:31,473 INFO L93 Difference]: Finished difference Result 363651 states and 534289 transitions. [2022-07-22 11:19:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:19:31,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 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 870 [2022-07-22 11:19:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:31,744 INFO L225 Difference]: With dead ends: 363651 [2022-07-22 11:19:31,744 INFO L226 Difference]: Without dead ends: 189028 [2022-07-22 11:19:31,817 INFO L412 NwaCegarLoop]: 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 [2022-07-22 11:19:31,817 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 70 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:31,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 712 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 11:19:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189028 states. [2022-07-22 11:19:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189028 to 182911. [2022-07-22 11:19:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182911 states, 182910 states have (on average 1.471860477830627) internal successors, (269218), 182910 states have internal predecessors, (269218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182911 states to 182911 states and 269218 transitions. [2022-07-22 11:19:37,933 INFO L78 Accepts]: Start accepts. Automaton has 182911 states and 269218 transitions. Word has length 870 [2022-07-22 11:19:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:19:37,934 INFO L495 AbstractCegarLoop]: Abstraction has 182911 states and 269218 transitions. [2022-07-22 11:19:37,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 182911 states and 269218 transitions. [2022-07-22 11:19:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2022-07-22 11:19:38,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:19:38,118 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 22, 22, 22, 21, 21, 20, 20, 19, 19, 19, 19, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:19:38,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-22 11:19:38,119 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:19:38,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:19:38,119 INFO L85 PathProgramCache]: Analyzing trace with hash 252028231, now seen corresponding path program 1 times [2022-07-22 11:19:38,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:19:38,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98870439] [2022-07-22 11:19:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:19:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 2716 proven. 388 refuted. 0 times theorem prover too weak. 4254 trivial. 0 not checked. [2022-07-22 11:19:38,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:19:38,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98870439] [2022-07-22 11:19:38,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98870439] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:19:38,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298955512] [2022-07-22 11:19:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:19:38,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:19:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:19:38,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:19:38,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 11:19:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:19:40,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-22 11:19:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:19:40,641 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 11:19:40,642 INFO L390 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 19 treesize of output 7 [2022-07-22 11:19:40,656 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:19:40,656 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:19:40,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:40,723 INFO L390 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 [2022-07-22 11:19:40,741 INFO L390 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 31 treesize of output 19 [2022-07-22 11:19:40,743 INFO L390 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 19 treesize of output 13 [2022-07-22 11:19:40,770 INFO L356 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-07-22 11:19:40,770 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 55 [2022-07-22 11:19:42,859 INFO L356 Elim1Store]: treesize reduction 80, result has 35.0 percent of original size [2022-07-22 11:19:42,860 INFO L390 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 77 [2022-07-22 11:19:42,926 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 11:19:42,927 INFO L390 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 24 treesize of output 23 [2022-07-22 11:19:42,971 INFO L390 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 20 treesize of output 8 [2022-07-22 11:19:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 3388 proven. 80 refuted. 0 times theorem prover too weak. 3890 trivial. 0 not checked. [2022-07-22 11:19:42,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:19:43,078 INFO L390 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 38 treesize of output 26 [2022-07-22 11:19:43,080 INFO L390 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 26 treesize of output 20 [2022-07-22 11:19:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7358 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 4436 trivial. 0 not checked. [2022-07-22 11:19:45,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298955512] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 11:19:45,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:19:45,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 9] total 22 [2022-07-22 11:19:45,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197966478] [2022-07-22 11:19:45,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:19:45,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:19:45,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:19:45,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:19:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=405, Unknown=1, NotChecked=0, Total=462 [2022-07-22 11:19:45,128 INFO L87 Difference]: Start difference. First operand 182911 states and 269218 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:19:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:19:50,599 INFO L93 Difference]: Finished difference Result 386426 states and 570155 transitions. [2022-07-22 11:19:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 11:19:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 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 872 [2022-07-22 11:19:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:19:51,102 INFO L225 Difference]: With dead ends: 386426 [2022-07-22 11:19:51,103 INFO L226 Difference]: Without dead ends: 203538 [2022-07-22 11:19:51,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1762 GetRequests, 1741 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=62, Invalid=443, Unknown=1, NotChecked=0, Total=506 [2022-07-22 11:19:51,184 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 235 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:19:51,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 767 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2022-07-22 11:19:51,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203538 states.