./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.01.i.cil-1.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 6cbab6fa89ec0662a3f26b65a5642d5ae526485e7fe3ba965ed5a2823e941a06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:37:05,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:37:05,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:37:05,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:37:05,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:37:05,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:37:05,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:37:05,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:37:05,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:37:05,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:37:05,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:37:05,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:37:05,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:37:05,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:37:05,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:37:05,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:37:05,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:37:05,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:37:05,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:37:05,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:37:05,767 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:37:05,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:37:05,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:37:05,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:37:05,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:37:05,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:37:05,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:37:05,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:37:05,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:37:05,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:37:05,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:37:05,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:37:05,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:37:05,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:37:05,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:37:05,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:37:05,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:37:05,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:37:05,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:37:05,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:37:05,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:37:05,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:37:05,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:37:05,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:37:05,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:37:05,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:37:05,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:37:05,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:37:05,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:37:05,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:37:05,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:37:05,832 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:37:05,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:37:05,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:37:05,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:37:05,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:37:05,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:37:05,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:37:05,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:37:05,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:37:05,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:37:05,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:37:05,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:37:05,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:37:05,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:37:05,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:37:05,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:37:05,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:37:05,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:37:05,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:37:05,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:37:05,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:37:05,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:37:05,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:37:05,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:37:05,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:37:05,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cbab6fa89ec0662a3f26b65a5642d5ae526485e7fe3ba965ed5a2823e941a06 [2022-07-20 22:37:06,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:37:06,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:37:06,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:37:06,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:37:06,192 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:37:06,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c [2022-07-20 22:37:06,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf96693f3/0f0b1d9d1e63434798f08eee377e160e/FLAG30420d4d3 [2022-07-20 22:37:06,811 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:37:06,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c [2022-07-20 22:37:06,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf96693f3/0f0b1d9d1e63434798f08eee377e160e/FLAG30420d4d3 [2022-07-20 22:37:07,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf96693f3/0f0b1d9d1e63434798f08eee377e160e [2022-07-20 22:37:07,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:37:07,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:37:07,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:37:07,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:37:07,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:37:07,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:07,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b030b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07, skipping insertion in model container [2022-07-20 22:37:07,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:07,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:37:07,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:37:07,781 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.01.i.cil-1.c[72918,72931] [2022-07-20 22:37:07,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:37:07,809 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:37:07,927 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.01.i.cil-1.c[72918,72931] [2022-07-20 22:37:07,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:37:07,951 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:37:07,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07 WrapperNode [2022-07-20 22:37:07,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:37:07,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:37:07,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:37:07,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:37:07,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:07,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,041 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 788 [2022-07-20 22:37:08,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:37:08,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:37:08,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:37:08,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:37:08,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:37:08,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:37:08,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:37:08,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:37:08,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (1/1) ... [2022-07-20 22:37:08,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:37:08,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:37:08,161 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) [2022-07-20 22:37:08,171 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 [2022-07-20 22:37:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:37:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 22:37:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 22:37:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 22:37:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 22:37:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:37:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 22:37:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:37:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:37:08,393 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:37:08,395 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:37:08,423 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:37:11,378 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-20 22:37:11,378 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-20 22:37:11,379 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:37:11,384 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:37:11,385 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:37:11,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:37:11 BoogieIcfgContainer [2022-07-20 22:37:11,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:37:11,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:37:11,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:37:11,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:37:11,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:37:07" (1/3) ... [2022-07-20 22:37:11,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1216d7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:37:11, skipping insertion in model container [2022-07-20 22:37:11,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:37:07" (2/3) ... [2022-07-20 22:37:11,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1216d7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:37:11, skipping insertion in model container [2022-07-20 22:37:11,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:37:11" (3/3) ... [2022-07-20 22:37:11,394 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-1.c [2022-07-20 22:37:11,406 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:37:11,407 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:37:11,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:37:11,453 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@2cb48b34, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@786c9035 [2022-07-20 22:37:11,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:37:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 22:37:11,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:11,468 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] [2022-07-20 22:37:11,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1383952291, now seen corresponding path program 1 times [2022-07-20 22:37:11,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:11,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047170186] [2022-07-20 22:37:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:12,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047170186] [2022-07-20 22:37:12,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047170186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:12,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:12,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:12,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714904155] [2022-07-20 22:37:12,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:12,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:12,074 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 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 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) [2022-07-20 22:37:14,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:14,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:14,715 INFO L93 Difference]: Finished difference Result 412 states and 693 transitions. [2022-07-20 22:37:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:14,718 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 [2022-07-20 22:37:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:14,728 INFO L225 Difference]: With dead ends: 412 [2022-07-20 22:37:14,728 INFO L226 Difference]: Without dead ends: 250 [2022-07-20 22:37:14,731 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 [2022-07-20 22:37:14,734 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 144 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:14,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 417 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 274 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 22:37:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-20 22:37:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 177. [2022-07-20 22:37:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.6079545454545454) internal successors, (283), 176 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 283 transitions. [2022-07-20 22:37:14,776 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 283 transitions. Word has length 48 [2022-07-20 22:37:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:14,777 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 283 transitions. [2022-07-20 22:37:14,777 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) [2022-07-20 22:37:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 283 transitions. [2022-07-20 22:37:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-20 22:37:14,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:14,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:37:14,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:37:14,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:14,781 INFO L85 PathProgramCache]: Analyzing trace with hash -268027324, now seen corresponding path program 1 times [2022-07-20 22:37:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:14,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869718223] [2022-07-20 22:37:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:14,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869718223] [2022-07-20 22:37:14,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869718223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:14,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:14,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048616593] [2022-07-20 22:37:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:14,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:14,932 INFO L87 Difference]: Start difference. First operand 177 states and 283 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:16,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:17,202 INFO L93 Difference]: Finished difference Result 372 states and 593 transitions. [2022-07-20 22:37:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-07-20 22:37:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:17,204 INFO L225 Difference]: With dead ends: 372 [2022-07-20 22:37:17,205 INFO L226 Difference]: Without dead ends: 205 [2022-07-20 22:37:17,205 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 [2022-07-20 22:37:17,207 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 22 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 448 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-20 22:37:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 188. [2022-07-20 22:37:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.6149732620320856) internal successors, (302), 187 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 302 transitions. [2022-07-20 22:37:17,220 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 302 transitions. Word has length 49 [2022-07-20 22:37:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:17,221 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 302 transitions. [2022-07-20 22:37:17,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 302 transitions. [2022-07-20 22:37:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-20 22:37:17,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:17,223 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, 1] [2022-07-20 22:37:17,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:37:17,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:17,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash -446456106, now seen corresponding path program 1 times [2022-07-20 22:37:17,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:17,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588320569] [2022-07-20 22:37:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:17,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:17,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:17,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588320569] [2022-07-20 22:37:17,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588320569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:17,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:17,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119791090] [2022-07-20 22:37:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:17,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:17,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:17,363 INFO L87 Difference]: Start difference. First operand 188 states and 302 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) [2022-07-20 22:37:19,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:19,808 INFO L93 Difference]: Finished difference Result 514 states and 830 transitions. [2022-07-20 22:37:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:19,809 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 [2022-07-20 22:37:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:19,811 INFO L225 Difference]: With dead ends: 514 [2022-07-20 22:37:19,811 INFO L226 Difference]: Without dead ends: 347 [2022-07-20 22:37:19,812 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 [2022-07-20 22:37:19,813 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 140 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:19,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 311 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 262 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:37:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-20 22:37:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 220. [2022-07-20 22:37:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6118721461187215) internal successors, (353), 219 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 353 transitions. [2022-07-20 22:37:19,826 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 353 transitions. Word has length 62 [2022-07-20 22:37:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:19,827 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 353 transitions. [2022-07-20 22:37:19,827 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) [2022-07-20 22:37:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 353 transitions. [2022-07-20 22:37:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 22:37:19,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:19,829 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, 1] [2022-07-20 22:37:19,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:37:19,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:19,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2018508714, now seen corresponding path program 1 times [2022-07-20 22:37:19,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:19,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317303506] [2022-07-20 22:37:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:19,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317303506] [2022-07-20 22:37:19,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317303506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:19,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:19,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927544864] [2022-07-20 22:37:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:19,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:19,943 INFO L87 Difference]: Start difference. First operand 220 states and 353 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) [2022-07-20 22:37:21,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:22,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:22,214 INFO L93 Difference]: Finished difference Result 435 states and 694 transitions. [2022-07-20 22:37:22,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:22,215 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 [2022-07-20 22:37:22,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:22,217 INFO L225 Difference]: With dead ends: 435 [2022-07-20 22:37:22,217 INFO L226 Difference]: Without dead ends: 236 [2022-07-20 22:37:22,217 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 [2022-07-20 22:37:22,218 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 21 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:22,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 452 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-20 22:37:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2022-07-20 22:37:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6073059360730593) internal successors, (352), 219 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 352 transitions. [2022-07-20 22:37:22,238 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 352 transitions. Word has length 63 [2022-07-20 22:37:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:22,238 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 352 transitions. [2022-07-20 22:37:22,238 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) [2022-07-20 22:37:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 352 transitions. [2022-07-20 22:37:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 22:37:22,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:22,245 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, 1] [2022-07-20 22:37:22,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:37:22,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1301029102, now seen corresponding path program 1 times [2022-07-20 22:37:22,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:22,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239763148] [2022-07-20 22:37:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:22,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:22,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239763148] [2022-07-20 22:37:22,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239763148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:22,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:22,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:22,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608675943] [2022-07-20 22:37:22,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:22,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:22,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:22,419 INFO L87 Difference]: Start difference. First operand 220 states and 352 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) [2022-07-20 22:37:23,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:23,970 INFO L93 Difference]: Finished difference Result 519 states and 825 transitions. [2022-07-20 22:37:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:23,970 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 [2022-07-20 22:37:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:23,972 INFO L225 Difference]: With dead ends: 519 [2022-07-20 22:37:23,972 INFO L226 Difference]: Without dead ends: 320 [2022-07-20 22:37:23,973 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 [2022-07-20 22:37:23,974 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 139 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:23,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 311 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-20 22:37:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-20 22:37:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 221. [2022-07-20 22:37:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5954545454545455) internal successors, (351), 220 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 351 transitions. [2022-07-20 22:37:23,982 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 351 transitions. Word has length 63 [2022-07-20 22:37:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:23,982 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 351 transitions. [2022-07-20 22:37:23,983 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) [2022-07-20 22:37:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 351 transitions. [2022-07-20 22:37:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-20 22:37:23,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:23,984 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, 1, 1] [2022-07-20 22:37:23,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:37:23,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:23,985 INFO L85 PathProgramCache]: Analyzing trace with hash -971650395, now seen corresponding path program 1 times [2022-07-20 22:37:23,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:23,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133874844] [2022-07-20 22:37:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:23,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:24,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:24,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133874844] [2022-07-20 22:37:24,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133874844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:24,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:24,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:24,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053068512] [2022-07-20 22:37:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:24,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:24,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:24,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:24,084 INFO L87 Difference]: Start difference. First operand 221 states and 351 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) [2022-07-20 22:37:25,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:25,755 INFO L93 Difference]: Finished difference Result 519 states and 821 transitions. [2022-07-20 22:37:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:25,755 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 [2022-07-20 22:37:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:25,757 INFO L225 Difference]: With dead ends: 519 [2022-07-20 22:37:25,757 INFO L226 Difference]: Without dead ends: 319 [2022-07-20 22:37:25,757 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 [2022-07-20 22:37:25,758 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 144 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:25,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 313 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-20 22:37:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-20 22:37:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 221. [2022-07-20 22:37:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5772727272727274) internal successors, (347), 220 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 347 transitions. [2022-07-20 22:37:25,769 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 347 transitions. Word has length 64 [2022-07-20 22:37:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:25,769 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 347 transitions. [2022-07-20 22:37:25,769 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) [2022-07-20 22:37:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 347 transitions. [2022-07-20 22:37:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-20 22:37:25,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:25,771 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, 1, 1] [2022-07-20 22:37:25,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:37:25,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1857333905, now seen corresponding path program 1 times [2022-07-20 22:37:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:25,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169000251] [2022-07-20 22:37:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:25,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:25,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169000251] [2022-07-20 22:37:25,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169000251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:25,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:25,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350112582] [2022-07-20 22:37:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:25,898 INFO L87 Difference]: Start difference. First operand 221 states and 347 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) [2022-07-20 22:37:27,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:28,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:28,133 INFO L93 Difference]: Finished difference Result 434 states and 682 transitions. [2022-07-20 22:37:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:28,134 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 [2022-07-20 22:37:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:28,135 INFO L225 Difference]: With dead ends: 434 [2022-07-20 22:37:28,135 INFO L226 Difference]: Without dead ends: 234 [2022-07-20 22:37:28,136 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 [2022-07-20 22:37:28,136 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 24 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:28,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 458 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-20 22:37:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-07-20 22:37:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5727272727272728) internal successors, (346), 220 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 346 transitions. [2022-07-20 22:37:28,156 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 346 transitions. Word has length 64 [2022-07-20 22:37:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:28,156 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 346 transitions. [2022-07-20 22:37:28,157 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) [2022-07-20 22:37:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 346 transitions. [2022-07-20 22:37:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-20 22:37:28,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:28,158 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, 1, 1] [2022-07-20 22:37:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:37:28,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash 269012237, now seen corresponding path program 1 times [2022-07-20 22:37:28,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:28,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384162180] [2022-07-20 22:37:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:28,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:28,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:28,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384162180] [2022-07-20 22:37:28,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384162180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:28,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:28,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642682381] [2022-07-20 22:37:28,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:28,271 INFO L87 Difference]: Start difference. First operand 221 states and 346 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) [2022-07-20 22:37:30,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:30,680 INFO L93 Difference]: Finished difference Result 519 states and 813 transitions. [2022-07-20 22:37:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:30,680 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 [2022-07-20 22:37:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:30,682 INFO L225 Difference]: With dead ends: 519 [2022-07-20 22:37:30,682 INFO L226 Difference]: Without dead ends: 319 [2022-07-20 22:37:30,682 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 [2022-07-20 22:37:30,683 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 141 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:30,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 313 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:37:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-20 22:37:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 221. [2022-07-20 22:37:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5545454545454545) internal successors, (342), 220 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 342 transitions. [2022-07-20 22:37:30,699 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 342 transitions. Word has length 65 [2022-07-20 22:37:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:30,700 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 342 transitions. [2022-07-20 22:37:30,700 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) [2022-07-20 22:37:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 342 transitions. [2022-07-20 22:37:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-20 22:37:30,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:30,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:37:30,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:37:30,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1305412400, now seen corresponding path program 1 times [2022-07-20 22:37:30,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:30,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172748217] [2022-07-20 22:37:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:30,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:37:30,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:30,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172748217] [2022-07-20 22:37:30,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172748217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:30,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:30,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:30,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592893493] [2022-07-20 22:37:30,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:30,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:30,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:30,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:30,799 INFO L87 Difference]: Start difference. First operand 221 states and 342 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:32,806 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 [] [2022-07-20 22:37:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:33,184 INFO L93 Difference]: Finished difference Result 519 states and 806 transitions. [2022-07-20 22:37:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:33,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-20 22:37:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:33,186 INFO L225 Difference]: With dead ends: 519 [2022-07-20 22:37:33,186 INFO L226 Difference]: Without dead ends: 317 [2022-07-20 22:37:33,187 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 [2022-07-20 22:37:33,188 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 111 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:33,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 327 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:37:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-20 22:37:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 246. [2022-07-20 22:37:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5959183673469388) internal successors, (391), 245 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 391 transitions. [2022-07-20 22:37:33,194 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 391 transitions. Word has length 66 [2022-07-20 22:37:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:33,194 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 391 transitions. [2022-07-20 22:37:33,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 391 transitions. [2022-07-20 22:37:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-20 22:37:33,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:33,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1] [2022-07-20 22:37:33,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:37:33,197 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1115483845, now seen corresponding path program 1 times [2022-07-20 22:37:33,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:33,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985822258] [2022-07-20 22:37:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-20 22:37:33,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:33,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985822258] [2022-07-20 22:37:33,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985822258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:33,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:33,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:33,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976978102] [2022-07-20 22:37:33,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:33,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:33,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:33,298 INFO L87 Difference]: Start difference. First operand 246 states and 391 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:35,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:35,532 INFO L93 Difference]: Finished difference Result 511 states and 814 transitions. [2022-07-20 22:37:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:35,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-20 22:37:35,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:35,534 INFO L225 Difference]: With dead ends: 511 [2022-07-20 22:37:35,534 INFO L226 Difference]: Without dead ends: 286 [2022-07-20 22:37:35,535 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 [2022-07-20 22:37:35,535 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 30 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:35,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 506 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-20 22:37:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 268. [2022-07-20 22:37:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.591760299625468) internal successors, (425), 267 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 425 transitions. [2022-07-20 22:37:35,558 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 425 transitions. Word has length 95 [2022-07-20 22:37:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:35,558 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 425 transitions. [2022-07-20 22:37:35,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 425 transitions. [2022-07-20 22:37:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-20 22:37:35,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:35,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1] [2022-07-20 22:37:35,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:37:35,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash 464418207, now seen corresponding path program 1 times [2022-07-20 22:37:35,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:35,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990462937] [2022-07-20 22:37:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 22:37:35,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:35,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990462937] [2022-07-20 22:37:35,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990462937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:35,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:35,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909333154] [2022-07-20 22:37:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:35,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:35,666 INFO L87 Difference]: Start difference. First operand 268 states and 425 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:37,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:37,896 INFO L93 Difference]: Finished difference Result 528 states and 840 transitions. [2022-07-20 22:37:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 95 [2022-07-20 22:37:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:37,898 INFO L225 Difference]: With dead ends: 528 [2022-07-20 22:37:37,898 INFO L226 Difference]: Without dead ends: 281 [2022-07-20 22:37:37,899 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 [2022-07-20 22:37:37,899 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 20 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:37,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 458 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:37,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-07-20 22:37:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 268. [2022-07-20 22:37:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.5880149812734083) internal successors, (424), 267 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 424 transitions. [2022-07-20 22:37:37,906 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 424 transitions. Word has length 95 [2022-07-20 22:37:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:37,906 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 424 transitions. [2022-07-20 22:37:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 424 transitions. [2022-07-20 22:37:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-20 22:37:37,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:37,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1] [2022-07-20 22:37:37,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:37:37,909 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash -74791869, now seen corresponding path program 1 times [2022-07-20 22:37:37,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:37,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191885744] [2022-07-20 22:37:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 22:37:38,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:38,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191885744] [2022-07-20 22:37:38,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191885744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:38,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:38,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:38,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625670079] [2022-07-20 22:37:38,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:38,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:38,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:38,046 INFO L87 Difference]: Start difference. First operand 268 states and 424 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:40,053 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 [] [2022-07-20 22:37:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:40,251 INFO L93 Difference]: Finished difference Result 518 states and 826 transitions. [2022-07-20 22:37:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:40,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-20 22:37:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:40,253 INFO L225 Difference]: With dead ends: 518 [2022-07-20 22:37:40,253 INFO L226 Difference]: Without dead ends: 271 [2022-07-20 22:37:40,253 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 [2022-07-20 22:37:40,254 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 11 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:40,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 472 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-20 22:37:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2022-07-20 22:37:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.5842696629213484) internal successors, (423), 267 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 423 transitions. [2022-07-20 22:37:40,260 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 423 transitions. Word has length 96 [2022-07-20 22:37:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:40,260 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 423 transitions. [2022-07-20 22:37:40,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 423 transitions. [2022-07-20 22:37:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-20 22:37:40,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:40,261 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-20 22:37:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:37:40,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1786617495, now seen corresponding path program 1 times [2022-07-20 22:37:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:40,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446622043] [2022-07-20 22:37:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:40,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 22:37:40,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:40,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446622043] [2022-07-20 22:37:40,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446622043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:40,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:40,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610558724] [2022-07-20 22:37:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:40,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:40,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:40,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:40,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:40,358 INFO L87 Difference]: Start difference. First operand 268 states and 423 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:42,364 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 [] [2022-07-20 22:37:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:42,598 INFO L93 Difference]: Finished difference Result 532 states and 844 transitions. [2022-07-20 22:37:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:42,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-20 22:37:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:42,600 INFO L225 Difference]: With dead ends: 532 [2022-07-20 22:37:42,600 INFO L226 Difference]: Without dead ends: 285 [2022-07-20 22:37:42,601 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 [2022-07-20 22:37:42,601 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 33 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:42,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 478 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 158 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-20 22:37:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 268. [2022-07-20 22:37:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.5805243445692885) internal successors, (422), 267 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 422 transitions. [2022-07-20 22:37:42,610 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 422 transitions. Word has length 109 [2022-07-20 22:37:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:42,611 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 422 transitions. [2022-07-20 22:37:42,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 422 transitions. [2022-07-20 22:37:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-20 22:37:42,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:42,613 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 22:37:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:37:42,613 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:42,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1803417690, now seen corresponding path program 1 times [2022-07-20 22:37:42,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:42,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83528647] [2022-07-20 22:37:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 22:37:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:42,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83528647] [2022-07-20 22:37:42,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83528647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:42,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:42,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12813464] [2022-07-20 22:37:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:42,735 INFO L87 Difference]: Start difference. First operand 268 states and 422 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:44,742 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 [] [2022-07-20 22:37:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:45,101 INFO L93 Difference]: Finished difference Result 586 states and 915 transitions. [2022-07-20 22:37:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-20 22:37:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:45,103 INFO L225 Difference]: With dead ends: 586 [2022-07-20 22:37:45,103 INFO L226 Difference]: Without dead ends: 339 [2022-07-20 22:37:45,104 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 [2022-07-20 22:37:45,104 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 140 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:45,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 331 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 257 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:37:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-20 22:37:45,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 268. [2022-07-20 22:37:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.5655430711610487) internal successors, (418), 267 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 418 transitions. [2022-07-20 22:37:45,111 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 418 transitions. Word has length 110 [2022-07-20 22:37:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:45,112 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 418 transitions. [2022-07-20 22:37:45,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 418 transitions. [2022-07-20 22:37:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-20 22:37:45,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:45,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 22:37:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:37:45,114 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:45,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1948427051, now seen corresponding path program 1 times [2022-07-20 22:37:45,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:45,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565613336] [2022-07-20 22:37:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 22:37:45,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:45,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565613336] [2022-07-20 22:37:45,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565613336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:45,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:45,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:45,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319413737] [2022-07-20 22:37:45,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:45,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:45,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:45,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:45,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:45,229 INFO L87 Difference]: Start difference. First operand 268 states and 418 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:47,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:47,614 INFO L93 Difference]: Finished difference Result 586 states and 907 transitions. [2022-07-20 22:37:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:47,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-20 22:37:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:47,616 INFO L225 Difference]: With dead ends: 586 [2022-07-20 22:37:47,616 INFO L226 Difference]: Without dead ends: 339 [2022-07-20 22:37:47,617 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 [2022-07-20 22:37:47,617 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 137 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:47,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 331 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 257 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:37:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-20 22:37:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 268. [2022-07-20 22:37:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.550561797752809) internal successors, (414), 267 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 414 transitions. [2022-07-20 22:37:47,625 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 414 transitions. Word has length 112 [2022-07-20 22:37:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:47,625 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 414 transitions. [2022-07-20 22:37:47,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 414 transitions. [2022-07-20 22:37:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-20 22:37:47,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:47,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 22:37:47,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:37:47,627 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1315157961, now seen corresponding path program 1 times [2022-07-20 22:37:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:47,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056366835] [2022-07-20 22:37:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:47,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 22:37:47,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056366835] [2022-07-20 22:37:47,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056366835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:47,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:47,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634196654] [2022-07-20 22:37:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:47,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:47,750 INFO L87 Difference]: Start difference. First operand 268 states and 414 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:49,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:49,960 INFO L93 Difference]: Finished difference Result 522 states and 813 transitions. [2022-07-20 22:37:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 113 [2022-07-20 22:37:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:49,961 INFO L225 Difference]: With dead ends: 522 [2022-07-20 22:37:49,962 INFO L226 Difference]: Without dead ends: 275 [2022-07-20 22:37:49,962 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 [2022-07-20 22:37:49,963 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 26 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:49,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 492 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:37:49,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-20 22:37:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 268. [2022-07-20 22:37:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.546816479400749) internal successors, (413), 267 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 413 transitions. [2022-07-20 22:37:49,969 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 413 transitions. Word has length 113 [2022-07-20 22:37:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:49,970 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 413 transitions. [2022-07-20 22:37:49,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 413 transitions. [2022-07-20 22:37:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-20 22:37:49,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:49,971 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, 1, 1] [2022-07-20 22:37:49,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:37:49,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1545905064, now seen corresponding path program 1 times [2022-07-20 22:37:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:49,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487031272] [2022-07-20 22:37:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:49,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-20 22:37:50,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:50,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487031272] [2022-07-20 22:37:50,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487031272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:50,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:50,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104258024] [2022-07-20 22:37:50,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:50,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:50,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:50,096 INFO L87 Difference]: Start difference. First operand 268 states and 413 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) [2022-07-20 22:37:52,103 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 [] [2022-07-20 22:37:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:52,413 INFO L93 Difference]: Finished difference Result 624 states and 964 transitions. [2022-07-20 22:37:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:52,413 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 117 [2022-07-20 22:37:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:52,415 INFO L225 Difference]: With dead ends: 624 [2022-07-20 22:37:52,415 INFO L226 Difference]: Without dead ends: 377 [2022-07-20 22:37:52,415 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 [2022-07-20 22:37:52,416 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 116 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:52,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 325 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 252 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:37:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-20 22:37:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 300. [2022-07-20 22:37:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.5518394648829432) internal successors, (464), 299 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 464 transitions. [2022-07-20 22:37:52,424 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 464 transitions. Word has length 117 [2022-07-20 22:37:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:52,425 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 464 transitions. [2022-07-20 22:37:52,425 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) [2022-07-20 22:37:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 464 transitions. [2022-07-20 22:37:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-20 22:37:52,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:52,427 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, 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] [2022-07-20 22:37:52,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:37:52,427 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:52,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2064254214, now seen corresponding path program 1 times [2022-07-20 22:37:52,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802659055] [2022-07-20 22:37:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-20 22:37:52,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:52,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802659055] [2022-07-20 22:37:52,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802659055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:52,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:52,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:52,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953515884] [2022-07-20 22:37:52,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:52,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:52,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:52,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:52,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:52,544 INFO L87 Difference]: Start difference. First operand 300 states and 464 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:54,551 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 [] [2022-07-20 22:37:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:54,900 INFO L93 Difference]: Finished difference Result 694 states and 1072 transitions. [2022-07-20 22:37:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:54,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 128 [2022-07-20 22:37:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:54,902 INFO L225 Difference]: With dead ends: 694 [2022-07-20 22:37:54,902 INFO L226 Difference]: Without dead ends: 415 [2022-07-20 22:37:54,903 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 [2022-07-20 22:37:54,904 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 109 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:54,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 315 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 262 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:37:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-20 22:37:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 343. [2022-07-20 22:37:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.5614035087719298) internal successors, (534), 342 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 534 transitions. [2022-07-20 22:37:54,912 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 534 transitions. Word has length 128 [2022-07-20 22:37:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:54,913 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 534 transitions. [2022-07-20 22:37:54,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 534 transitions. [2022-07-20 22:37:54,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-20 22:37:54,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:54,914 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, 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] [2022-07-20 22:37:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 22:37:54,915 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 187771396, now seen corresponding path program 1 times [2022-07-20 22:37:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:54,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466745791] [2022-07-20 22:37:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:54,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-20 22:37:55,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:55,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466745791] [2022-07-20 22:37:55,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466745791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:55,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:55,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:37:55,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949379665] [2022-07-20 22:37:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:55,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:37:55,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:37:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:37:55,104 INFO L87 Difference]: Start difference. First operand 343 states and 534 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2022-07-20 22:37:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:55,132 INFO L93 Difference]: Finished difference Result 981 states and 1546 transitions. [2022-07-20 22:37:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:37:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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 128 [2022-07-20 22:37:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:55,136 INFO L225 Difference]: With dead ends: 981 [2022-07-20 22:37:55,136 INFO L226 Difference]: Without dead ends: 659 [2022-07-20 22:37:55,137 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 [2022-07-20 22:37:55,138 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 135 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:55,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 558 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:37:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-20 22:37:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-20 22:37:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.5668693009118542) internal successors, (1031), 658 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1031 transitions. [2022-07-20 22:37:55,153 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1031 transitions. Word has length 128 [2022-07-20 22:37:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:55,153 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1031 transitions. [2022-07-20 22:37:55,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2022-07-20 22:37:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1031 transitions. [2022-07-20 22:37:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-20 22:37:55,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:55,155 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, 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] [2022-07-20 22:37:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:37:55,156 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1081257734, now seen corresponding path program 1 times [2022-07-20 22:37:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:55,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358951959] [2022-07-20 22:37:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-20 22:37:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:55,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358951959] [2022-07-20 22:37:55,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358951959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:55,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:55,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:37:55,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847681017] [2022-07-20 22:37:55,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:55,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:37:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:37:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:37:55,269 INFO L87 Difference]: Start difference. First operand 659 states and 1031 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:55,300 INFO L93 Difference]: Finished difference Result 1572 states and 2471 transitions. [2022-07-20 22:37:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:37:55,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 128 [2022-07-20 22:37:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:55,303 INFO L225 Difference]: With dead ends: 1572 [2022-07-20 22:37:55,304 INFO L226 Difference]: Without dead ends: 934 [2022-07-20 22:37:55,305 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 [2022-07-20 22:37:55,306 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 138 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:55,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 431 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:37:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-07-20 22:37:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 934. [2022-07-20 22:37:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 1.5637727759914255) internal successors, (1459), 933 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1459 transitions. [2022-07-20 22:37:55,328 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1459 transitions. Word has length 128 [2022-07-20 22:37:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:55,328 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1459 transitions. [2022-07-20 22:37:55,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1459 transitions. [2022-07-20 22:37:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-20 22:37:55,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:55,331 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, 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] [2022-07-20 22:37:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 22:37:55,331 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 494981512, now seen corresponding path program 1 times [2022-07-20 22:37:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:55,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431388946] [2022-07-20 22:37:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-20 22:37:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:55,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431388946] [2022-07-20 22:37:55,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431388946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:55,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:55,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:37:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087288472] [2022-07-20 22:37:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:37:55,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:37:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:37:55,427 INFO L87 Difference]: Start difference. First operand 934 states and 1459 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:55,453 INFO L93 Difference]: Finished difference Result 1874 states and 2930 transitions. [2022-07-20 22:37:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:37:55,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 128 [2022-07-20 22:37:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:55,457 INFO L225 Difference]: With dead ends: 1874 [2022-07-20 22:37:55,457 INFO L226 Difference]: Without dead ends: 961 [2022-07-20 22:37:55,458 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 [2022-07-20 22:37:55,459 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 15 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:55,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 404 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:37:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-07-20 22:37:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2022-07-20 22:37:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 960 states have (on average 1.55625) internal successors, (1494), 960 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1494 transitions. [2022-07-20 22:37:55,481 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1494 transitions. Word has length 128 [2022-07-20 22:37:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:55,482 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1494 transitions. [2022-07-20 22:37:55,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1494 transitions. [2022-07-20 22:37:55,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-20 22:37:55,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:55,484 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, 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] [2022-07-20 22:37:55,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 22:37:55,484 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:55,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1646878966, now seen corresponding path program 1 times [2022-07-20 22:37:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:55,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055257249] [2022-07-20 22:37:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:55,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 22:37:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:55,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055257249] [2022-07-20 22:37:55,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055257249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:55,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:55,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:37:55,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702997702] [2022-07-20 22:37:55,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:55,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:37:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:37:55,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:37:55,576 INFO L87 Difference]: Start difference. First operand 961 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:55,597 INFO L93 Difference]: Finished difference Result 1903 states and 2966 transitions. [2022-07-20 22:37:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:37:55,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-07-20 22:37:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:55,601 INFO L225 Difference]: With dead ends: 1903 [2022-07-20 22:37:55,601 INFO L226 Difference]: Without dead ends: 963 [2022-07-20 22:37:55,602 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 [2022-07-20 22:37:55,603 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 4 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:55,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 383 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:37:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-20 22:37:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-07-20 22:37:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.5550935550935552) internal successors, (1496), 962 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1496 transitions. [2022-07-20 22:37:55,634 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1496 transitions. Word has length 128 [2022-07-20 22:37:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:55,634 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1496 transitions. [2022-07-20 22:37:55,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1496 transitions. [2022-07-20 22:37:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-20 22:37:55,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:55,638 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:37:55,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-20 22:37:55,638 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash 331983923, now seen corresponding path program 1 times [2022-07-20 22:37:55,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:55,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640170316] [2022-07-20 22:37:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:55,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-20 22:37:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640170316] [2022-07-20 22:37:55,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640170316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:55,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:55,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632733288] [2022-07-20 22:37:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:55,783 INFO L87 Difference]: Start difference. First operand 963 states and 1496 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:57,790 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 [] [2022-07-20 22:37:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:58,137 INFO L93 Difference]: Finished difference Result 2008 states and 3100 transitions. [2022-07-20 22:37:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:37:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 208 [2022-07-20 22:37:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:58,141 INFO L225 Difference]: With dead ends: 2008 [2022-07-20 22:37:58,142 INFO L226 Difference]: Without dead ends: 1068 [2022-07-20 22:37:58,143 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 [2022-07-20 22:37:58,143 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 80 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:58,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 617 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:37:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-07-20 22:37:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 963. [2022-07-20 22:37:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.553014553014553) internal successors, (1494), 962 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1494 transitions. [2022-07-20 22:37:58,181 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1494 transitions. Word has length 208 [2022-07-20 22:37:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:58,182 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1494 transitions. [2022-07-20 22:37:58,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:37:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1494 transitions. [2022-07-20 22:37:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-20 22:37:58,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:58,185 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:37:58,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 22:37:58,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1176878834, now seen corresponding path program 1 times [2022-07-20 22:37:58,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:58,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23773714] [2022-07-20 22:37:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:58,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-20 22:37:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:58,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23773714] [2022-07-20 22:37:58,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23773714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:58,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:58,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:37:58,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916767989] [2022-07-20 22:37:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:58,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:37:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:58,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:37:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:37:58,335 INFO L87 Difference]: Start difference. First operand 963 states and 1494 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:00,341 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 [] [2022-07-20 22:38:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:00,735 INFO L93 Difference]: Finished difference Result 2107 states and 3231 transitions. [2022-07-20 22:38:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:00,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 209 [2022-07-20 22:38:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:00,740 INFO L225 Difference]: With dead ends: 2107 [2022-07-20 22:38:00,741 INFO L226 Difference]: Without dead ends: 1167 [2022-07-20 22:38:00,742 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 [2022-07-20 22:38:00,743 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 109 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:00,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 313 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 257 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:38:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-07-20 22:38:00,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 963. [2022-07-20 22:38:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.5446985446985446) internal successors, (1486), 962 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1486 transitions. [2022-07-20 22:38:00,768 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1486 transitions. Word has length 209 [2022-07-20 22:38:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:00,769 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1486 transitions. [2022-07-20 22:38:00,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1486 transitions. [2022-07-20 22:38:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-20 22:38:00,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:00,773 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:38:00,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 22:38:00,774 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1702915551, now seen corresponding path program 1 times [2022-07-20 22:38:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:00,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008663898] [2022-07-20 22:38:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-20 22:38:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:00,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008663898] [2022-07-20 22:38:00,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008663898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:00,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:00,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289440393] [2022-07-20 22:38:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:00,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:00,945 INFO L87 Difference]: Start difference. First operand 963 states and 1486 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:02,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:02,688 INFO L93 Difference]: Finished difference Result 2104 states and 3212 transitions. [2022-07-20 22:38:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:02,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 222 [2022-07-20 22:38:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:02,704 INFO L225 Difference]: With dead ends: 2104 [2022-07-20 22:38:02,705 INFO L226 Difference]: Without dead ends: 1164 [2022-07-20 22:38:02,706 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 [2022-07-20 22:38:02,706 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 130 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:02,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 315 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-20 22:38:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-07-20 22:38:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 963. [2022-07-20 22:38:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.5332640332640333) internal successors, (1475), 962 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1475 transitions. [2022-07-20 22:38:02,735 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1475 transitions. Word has length 222 [2022-07-20 22:38:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:02,736 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1475 transitions. [2022-07-20 22:38:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1475 transitions. [2022-07-20 22:38:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-20 22:38:02,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:02,740 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:38:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 22:38:02,740 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash 553077487, now seen corresponding path program 1 times [2022-07-20 22:38:02,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:02,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932959927] [2022-07-20 22:38:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-20 22:38:02,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:02,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932959927] [2022-07-20 22:38:02,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932959927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:02,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:02,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:02,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930157918] [2022-07-20 22:38:02,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:02,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:02,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:02,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:02,896 INFO L87 Difference]: Start difference. First operand 963 states and 1475 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:04,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:04,516 INFO L93 Difference]: Finished difference Result 1939 states and 2968 transitions. [2022-07-20 22:38:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:04,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 226 [2022-07-20 22:38:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:04,520 INFO L225 Difference]: With dead ends: 1939 [2022-07-20 22:38:04,521 INFO L226 Difference]: Without dead ends: 999 [2022-07-20 22:38:04,522 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 [2022-07-20 22:38:04,522 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 18 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:04,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 533 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-20 22:38:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-07-20 22:38:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 963. [2022-07-20 22:38:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.5301455301455302) internal successors, (1472), 962 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1472 transitions. [2022-07-20 22:38:04,544 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1472 transitions. Word has length 226 [2022-07-20 22:38:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:04,544 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1472 transitions. [2022-07-20 22:38:04,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1472 transitions. [2022-07-20 22:38:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-20 22:38:04,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:04,548 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:38:04,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 22:38:04,548 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash -899643668, now seen corresponding path program 1 times [2022-07-20 22:38:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:04,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211202070] [2022-07-20 22:38:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-20 22:38:04,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:04,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211202070] [2022-07-20 22:38:04,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211202070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:04,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:04,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503248055] [2022-07-20 22:38:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:04,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:04,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:04,737 INFO L87 Difference]: Start difference. First operand 963 states and 1472 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:06,744 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 [] [2022-07-20 22:38:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:07,051 INFO L93 Difference]: Finished difference Result 2074 states and 3145 transitions. [2022-07-20 22:38:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:07,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 227 [2022-07-20 22:38:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:07,056 INFO L225 Difference]: With dead ends: 2074 [2022-07-20 22:38:07,056 INFO L226 Difference]: Without dead ends: 1134 [2022-07-20 22:38:07,057 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 [2022-07-20 22:38:07,058 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 125 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:07,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 335 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-07-20 22:38:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 963. [2022-07-20 22:38:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.5155925155925156) internal successors, (1458), 962 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1458 transitions. [2022-07-20 22:38:07,080 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1458 transitions. Word has length 227 [2022-07-20 22:38:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:07,081 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1458 transitions. [2022-07-20 22:38:07,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1458 transitions. [2022-07-20 22:38:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-20 22:38:07,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:07,084 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:38:07,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 22:38:07,085 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2004826738, now seen corresponding path program 1 times [2022-07-20 22:38:07,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:07,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514110751] [2022-07-20 22:38:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 290 proven. 34 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-20 22:38:07,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:07,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514110751] [2022-07-20 22:38:07,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514110751] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:38:07,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26822526] [2022-07-20 22:38:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:07,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:38:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:38:07,255 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) [2022-07-20 22:38:07,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 22:38:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:07,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:38:07,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:38:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-20 22:38:08,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:38:08,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26822526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:08,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:38:08,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-20 22:38:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199476267] [2022-07-20 22:38:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:38:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:38:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:38:08,086 INFO L87 Difference]: Start difference. First operand 963 states and 1458 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) [2022-07-20 22:38:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:08,127 INFO L93 Difference]: Finished difference Result 1285 states and 1953 transitions. [2022-07-20 22:38:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:38:08,128 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 230 [2022-07-20 22:38:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:08,132 INFO L225 Difference]: With dead ends: 1285 [2022-07-20 22:38:08,132 INFO L226 Difference]: Without dead ends: 1283 [2022-07-20 22:38:08,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:38:08,133 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 142 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:08,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 373 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:38:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-07-20 22:38:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2022-07-20 22:38:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.5218408736349454) internal successors, (1951), 1282 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1951 transitions. [2022-07-20 22:38:08,176 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1951 transitions. Word has length 230 [2022-07-20 22:38:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:08,177 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1951 transitions. [2022-07-20 22:38:08,177 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) [2022-07-20 22:38:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1951 transitions. [2022-07-20 22:38:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-20 22:38:08,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:08,183 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-20 22:38:08,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 22:38:08,411 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,SelfDestructingSolverStorable27 [2022-07-20 22:38:08,412 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash -270358069, now seen corresponding path program 1 times [2022-07-20 22:38:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:08,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491839395] [2022-07-20 22:38:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 443 proven. 34 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-20 22:38:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491839395] [2022-07-20 22:38:08,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491839395] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:38:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580321015] [2022-07-20 22:38:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:08,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:38:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:38:08,626 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) [2022-07-20 22:38:08,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 22:38:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:09,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-20 22:38:09,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:38:09,494 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-20 22:38:09,495 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 [2022-07-20 22:38:09,551 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-20 22:38:09,551 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 [2022-07-20 22:38:09,559 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 [2022-07-20 22:38:09,581 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-20 22:38:09,582 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 [2022-07-20 22:38:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 471 proven. 48 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-20 22:38:09,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 22:38:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-07-20 22:38:09,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580321015] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 22:38:09,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-20 22:38:09,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2022-07-20 22:38:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156865294] [2022-07-20 22:38:09,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:38:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:38:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:38:09,750 INFO L87 Difference]: Start difference. First operand 1283 states and 1951 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:11,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:13,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:14,197 INFO L93 Difference]: Finished difference Result 3058 states and 4640 transitions. [2022-07-20 22:38:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:14,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2022-07-20 22:38:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:14,203 INFO L225 Difference]: With dead ends: 3058 [2022-07-20 22:38:14,204 INFO L226 Difference]: Without dead ends: 1798 [2022-07-20 22:38:14,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:38:14,206 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 129 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:14,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 441 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 311 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-07-20 22:38:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2022-07-20 22:38:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1571. [2022-07-20 22:38:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 1.5331210191082802) internal successors, (2407), 1570 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2407 transitions. [2022-07-20 22:38:14,243 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2407 transitions. Word has length 303 [2022-07-20 22:38:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:14,244 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2407 transitions. [2022-07-20 22:38:14,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2407 transitions. [2022-07-20 22:38:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-07-20 22:38:14,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:14,248 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2022-07-20 22:38:14,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 22:38:14,467 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,SelfDestructingSolverStorable28 [2022-07-20 22:38:14,468 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash -273851134, now seen corresponding path program 1 times [2022-07-20 22:38:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:14,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997411724] [2022-07-20 22:38:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:14,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-07-20 22:38:14,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:14,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997411724] [2022-07-20 22:38:14,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997411724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:14,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:14,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497048577] [2022-07-20 22:38:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:14,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:14,637 INFO L87 Difference]: Start difference. First operand 1571 states and 2407 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:16,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:17,049 INFO L93 Difference]: Finished difference Result 3516 states and 5359 transitions. [2022-07-20 22:38:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:17,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2022-07-20 22:38:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:17,057 INFO L225 Difference]: With dead ends: 3516 [2022-07-20 22:38:17,057 INFO L226 Difference]: Without dead ends: 1968 [2022-07-20 22:38:17,060 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 [2022-07-20 22:38:17,062 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 102 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:17,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 339 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:38:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2022-07-20 22:38:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1719. [2022-07-20 22:38:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.5320139697322468) internal successors, (2632), 1718 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2632 transitions. [2022-07-20 22:38:17,112 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2632 transitions. Word has length 315 [2022-07-20 22:38:17,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:17,113 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2632 transitions. [2022-07-20 22:38:17,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2632 transitions. [2022-07-20 22:38:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-20 22:38:17,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:17,118 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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] [2022-07-20 22:38:17,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-20 22:38:17,118 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash 157640067, now seen corresponding path program 1 times [2022-07-20 22:38:17,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:17,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30281590] [2022-07-20 22:38:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:17,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-07-20 22:38:17,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:17,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30281590] [2022-07-20 22:38:17,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30281590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:17,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:17,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:17,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410336922] [2022-07-20 22:38:17,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:17,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:17,307 INFO L87 Difference]: Start difference. First operand 1719 states and 2632 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:19,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:19,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:19,629 INFO L93 Difference]: Finished difference Result 3644 states and 5545 transitions. [2022-07-20 22:38:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:19,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 316 [2022-07-20 22:38:19,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:19,634 INFO L225 Difference]: With dead ends: 3644 [2022-07-20 22:38:19,634 INFO L226 Difference]: Without dead ends: 1948 [2022-07-20 22:38:19,637 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 [2022-07-20 22:38:19,637 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 101 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:19,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 351 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-07-20 22:38:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1719. [2022-07-20 22:38:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.5232828870779977) internal successors, (2617), 1718 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2617 transitions. [2022-07-20 22:38:19,680 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2617 transitions. Word has length 316 [2022-07-20 22:38:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:19,681 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2617 transitions. [2022-07-20 22:38:19,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:19,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2617 transitions. [2022-07-20 22:38:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-07-20 22:38:19,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:19,685 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2022-07-20 22:38:19,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-20 22:38:19,685 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1517469961, now seen corresponding path program 1 times [2022-07-20 22:38:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:19,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080147859] [2022-07-20 22:38:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-07-20 22:38:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:20,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080147859] [2022-07-20 22:38:20,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080147859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:20,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:20,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:38:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196217472] [2022-07-20 22:38:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:38:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:38:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:38:20,074 INFO L87 Difference]: Start difference. First operand 1719 states and 2617 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 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) [2022-07-20 22:38:22,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:24,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:25,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:25,126 INFO L93 Difference]: Finished difference Result 5138 states and 7849 transitions. [2022-07-20 22:38:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:38:25,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 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 325 [2022-07-20 22:38:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:25,154 INFO L225 Difference]: With dead ends: 5138 [2022-07-20 22:38:25,155 INFO L226 Difference]: Without dead ends: 3442 [2022-07-20 22:38:25,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:38:25,159 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 329 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 76 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:25,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1103 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 797 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-07-20 22:38:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-07-20 22:38:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3239. [2022-07-20 22:38:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3239 states, 3238 states have (on average 1.5435453983940703) internal successors, (4998), 3238 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4998 transitions. [2022-07-20 22:38:25,263 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4998 transitions. Word has length 325 [2022-07-20 22:38:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:25,264 INFO L495 AbstractCegarLoop]: Abstraction has 3239 states and 4998 transitions. [2022-07-20 22:38:25,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 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) [2022-07-20 22:38:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4998 transitions. [2022-07-20 22:38:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-20 22:38:25,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:25,271 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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] [2022-07-20 22:38:25,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-20 22:38:25,272 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1066276522, now seen corresponding path program 1 times [2022-07-20 22:38:25,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:25,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013645644] [2022-07-20 22:38:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:25,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-20 22:38:25,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:25,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013645644] [2022-07-20 22:38:25,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013645644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:25,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:25,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:25,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127410426] [2022-07-20 22:38:25,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:25,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:25,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:25,507 INFO L87 Difference]: Start difference. First operand 3239 states and 4998 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:27,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:27,834 INFO L93 Difference]: Finished difference Result 7001 states and 10771 transitions. [2022-07-20 22:38:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2022-07-20 22:38:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:27,842 INFO L225 Difference]: With dead ends: 7001 [2022-07-20 22:38:27,842 INFO L226 Difference]: Without dead ends: 3761 [2022-07-20 22:38:27,880 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 [2022-07-20 22:38:27,884 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 52 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:27,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 590 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2022-07-20 22:38:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3527. [2022-07-20 22:38:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3526 states have (on average 1.5467952353942145) internal successors, (5454), 3526 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5454 transitions. [2022-07-20 22:38:28,065 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5454 transitions. Word has length 326 [2022-07-20 22:38:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:28,066 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5454 transitions. [2022-07-20 22:38:28,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5454 transitions. [2022-07-20 22:38:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-07-20 22:38:28,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:28,074 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-20 22:38:28,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-20 22:38:28,075 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash -723493453, now seen corresponding path program 1 times [2022-07-20 22:38:28,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:28,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969007102] [2022-07-20 22:38:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-20 22:38:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:28,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969007102] [2022-07-20 22:38:28,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969007102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:28,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:28,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175053182] [2022-07-20 22:38:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:28,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:28,324 INFO L87 Difference]: Start difference. First operand 3527 states and 5454 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:30,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:30,658 INFO L93 Difference]: Finished difference Result 7138 states and 11022 transitions. [2022-07-20 22:38:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:30,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 338 [2022-07-20 22:38:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:30,665 INFO L225 Difference]: With dead ends: 7138 [2022-07-20 22:38:30,666 INFO L226 Difference]: Without dead ends: 3634 [2022-07-20 22:38:30,669 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 [2022-07-20 22:38:30,670 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 71 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:30,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 591 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-07-20 22:38:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3527. [2022-07-20 22:38:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3526 states have (on average 1.5459444129325015) internal successors, (5451), 3526 states have internal predecessors, (5451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5451 transitions. [2022-07-20 22:38:30,751 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5451 transitions. Word has length 338 [2022-07-20 22:38:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:30,751 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5451 transitions. [2022-07-20 22:38:30,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5451 transitions. [2022-07-20 22:38:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-07-20 22:38:30,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:30,759 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-20 22:38:30,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-20 22:38:30,759 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1362236269, now seen corresponding path program 1 times [2022-07-20 22:38:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:30,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140966107] [2022-07-20 22:38:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-20 22:38:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:30,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140966107] [2022-07-20 22:38:30,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140966107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:30,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:30,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:30,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171382839] [2022-07-20 22:38:30,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:30,941 INFO L87 Difference]: Start difference. First operand 3527 states and 5451 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:32,947 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 [] [2022-07-20 22:38:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:33,279 INFO L93 Difference]: Finished difference Result 7463 states and 11460 transitions. [2022-07-20 22:38:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2022-07-20 22:38:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:33,287 INFO L225 Difference]: With dead ends: 7463 [2022-07-20 22:38:33,288 INFO L226 Difference]: Without dead ends: 3959 [2022-07-20 22:38:33,292 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 [2022-07-20 22:38:33,292 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 107 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:33,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 351 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2022-07-20 22:38:33,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3527. [2022-07-20 22:38:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3526 states have (on average 1.5280771412365286) internal successors, (5388), 3526 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5388 transitions. [2022-07-20 22:38:33,376 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5388 transitions. Word has length 339 [2022-07-20 22:38:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:33,376 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5388 transitions. [2022-07-20 22:38:33,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5388 transitions. [2022-07-20 22:38:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-07-20 22:38:33,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:33,404 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-20 22:38:33,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-20 22:38:33,404 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:33,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1244495786, now seen corresponding path program 1 times [2022-07-20 22:38:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:33,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708166469] [2022-07-20 22:38:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-20 22:38:33,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:33,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708166469] [2022-07-20 22:38:33,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708166469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:33,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:33,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133584881] [2022-07-20 22:38:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:33,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:33,556 INFO L87 Difference]: Start difference. First operand 3527 states and 5388 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:35,563 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 [] [2022-07-20 22:38:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:35,936 INFO L93 Difference]: Finished difference Result 7775 states and 11814 transitions. [2022-07-20 22:38:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:35,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 341 [2022-07-20 22:38:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:35,945 INFO L225 Difference]: With dead ends: 7775 [2022-07-20 22:38:35,945 INFO L226 Difference]: Without dead ends: 4271 [2022-07-20 22:38:35,947 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 [2022-07-20 22:38:35,948 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 109 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:35,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 353 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2022-07-20 22:38:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 3751. [2022-07-20 22:38:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5117333333333334) internal successors, (5669), 3750 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5669 transitions. [2022-07-20 22:38:36,058 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5669 transitions. Word has length 341 [2022-07-20 22:38:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:36,058 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5669 transitions. [2022-07-20 22:38:36,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5669 transitions. [2022-07-20 22:38:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-07-20 22:38:36,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:36,069 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-20 22:38:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-20 22:38:36,070 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1779158444, now seen corresponding path program 1 times [2022-07-20 22:38:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:36,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540119935] [2022-07-20 22:38:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:36,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-20 22:38:36,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:36,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540119935] [2022-07-20 22:38:36,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540119935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:36,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:36,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:36,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614978975] [2022-07-20 22:38:36,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:36,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:36,238 INFO L87 Difference]: Start difference. First operand 3751 states and 5669 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:38,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:38,562 INFO L93 Difference]: Finished difference Result 7697 states and 11609 transitions. [2022-07-20 22:38:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 341 [2022-07-20 22:38:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:38,571 INFO L225 Difference]: With dead ends: 7697 [2022-07-20 22:38:38,571 INFO L226 Difference]: Without dead ends: 3969 [2022-07-20 22:38:38,576 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 [2022-07-20 22:38:38,577 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 53 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:38,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 582 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:38,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2022-07-20 22:38:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3751. [2022-07-20 22:38:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5096) internal successors, (5661), 3750 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5661 transitions. [2022-07-20 22:38:38,666 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5661 transitions. Word has length 341 [2022-07-20 22:38:38,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:38,666 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5661 transitions. [2022-07-20 22:38:38,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:38,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5661 transitions. [2022-07-20 22:38:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-20 22:38:38,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:38,674 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-20 22:38:38,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-20 22:38:38,674 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash -604197104, now seen corresponding path program 1 times [2022-07-20 22:38:38,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:38,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292160902] [2022-07-20 22:38:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:38,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-20 22:38:38,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:38,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292160902] [2022-07-20 22:38:38,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292160902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:38,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:38,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:38,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540675749] [2022-07-20 22:38:38,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:38,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:38,869 INFO L87 Difference]: Start difference. First operand 3751 states and 5661 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:40,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:41,121 INFO L93 Difference]: Finished difference Result 7556 states and 11391 transitions. [2022-07-20 22:38:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:41,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2022-07-20 22:38:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:41,129 INFO L225 Difference]: With dead ends: 7556 [2022-07-20 22:38:41,130 INFO L226 Difference]: Without dead ends: 3828 [2022-07-20 22:38:41,134 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 [2022-07-20 22:38:41,135 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 59 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:41,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 577 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:38:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2022-07-20 22:38:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3751. [2022-07-20 22:38:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5088) internal successors, (5658), 3750 states have internal predecessors, (5658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5658 transitions. [2022-07-20 22:38:41,220 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5658 transitions. Word has length 342 [2022-07-20 22:38:41,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:41,220 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5658 transitions. [2022-07-20 22:38:41,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5658 transitions. [2022-07-20 22:38:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-07-20 22:38:41,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:41,228 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-20 22:38:41,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-20 22:38:41,228 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash -871793655, now seen corresponding path program 1 times [2022-07-20 22:38:41,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:41,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806987734] [2022-07-20 22:38:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:41,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-20 22:38:41,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806987734] [2022-07-20 22:38:41,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806987734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:41,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:41,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887820357] [2022-07-20 22:38:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:41,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:41,431 INFO L87 Difference]: Start difference. First operand 3751 states and 5658 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:43,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:43,704 INFO L93 Difference]: Finished difference Result 7633 states and 11483 transitions. [2022-07-20 22:38:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2022-07-20 22:38:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:43,711 INFO L225 Difference]: With dead ends: 7633 [2022-07-20 22:38:43,712 INFO L226 Difference]: Without dead ends: 3905 [2022-07-20 22:38:43,716 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 [2022-07-20 22:38:43,716 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 44 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:43,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 572 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:38:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2022-07-20 22:38:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3751. [2022-07-20 22:38:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5066666666666666) internal successors, (5650), 3750 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5650 transitions. [2022-07-20 22:38:43,841 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5650 transitions. Word has length 345 [2022-07-20 22:38:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:43,842 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5650 transitions. [2022-07-20 22:38:43,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5650 transitions. [2022-07-20 22:38:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-20 22:38:43,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:43,850 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2022-07-20 22:38:43,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-20 22:38:43,850 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1584809309, now seen corresponding path program 1 times [2022-07-20 22:38:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:43,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068641868] [2022-07-20 22:38:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:43,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 609 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-07-20 22:38:44,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:44,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068641868] [2022-07-20 22:38:44,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068641868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:44,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:44,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397833211] [2022-07-20 22:38:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:44,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:44,014 INFO L87 Difference]: Start difference. First operand 3751 states and 5650 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:46,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:46,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:46,273 INFO L93 Difference]: Finished difference Result 7556 states and 11369 transitions. [2022-07-20 22:38:46,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:46,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 [2022-07-20 22:38:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:46,277 INFO L225 Difference]: With dead ends: 7556 [2022-07-20 22:38:46,277 INFO L226 Difference]: Without dead ends: 3828 [2022-07-20 22:38:46,279 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 [2022-07-20 22:38:46,280 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 52 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:46,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 573 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:38:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2022-07-20 22:38:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3751. [2022-07-20 22:38:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5058666666666667) internal successors, (5647), 3750 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5647 transitions. [2022-07-20 22:38:46,362 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5647 transitions. Word has length 347 [2022-07-20 22:38:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:46,363 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5647 transitions. [2022-07-20 22:38:46,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5647 transitions. [2022-07-20 22:38:46,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-20 22:38:46,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:46,370 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 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] [2022-07-20 22:38:46,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-20 22:38:46,370 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1676437080, now seen corresponding path program 1 times [2022-07-20 22:38:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:46,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140115688] [2022-07-20 22:38:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-20 22:38:46,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:46,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140115688] [2022-07-20 22:38:46,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140115688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:46,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:46,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504007719] [2022-07-20 22:38:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:46,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:46,552 INFO L87 Difference]: Start difference. First operand 3751 states and 5647 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:48,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:48,796 INFO L93 Difference]: Finished difference Result 7633 states and 11461 transitions. [2022-07-20 22:38:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2022-07-20 22:38:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:48,801 INFO L225 Difference]: With dead ends: 7633 [2022-07-20 22:38:48,801 INFO L226 Difference]: Without dead ends: 3905 [2022-07-20 22:38:48,804 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 [2022-07-20 22:38:48,805 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 50 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:48,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 570 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:38:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2022-07-20 22:38:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3751. [2022-07-20 22:38:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5037333333333334) internal successors, (5639), 3750 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5639 transitions. [2022-07-20 22:38:48,890 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5639 transitions. Word has length 347 [2022-07-20 22:38:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:48,890 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5639 transitions. [2022-07-20 22:38:48,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5639 transitions. [2022-07-20 22:38:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-20 22:38:48,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:48,897 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 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] [2022-07-20 22:38:48,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-20 22:38:48,898 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1905695684, now seen corresponding path program 1 times [2022-07-20 22:38:48,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:48,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743914097] [2022-07-20 22:38:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:48,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-07-20 22:38:49,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:49,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743914097] [2022-07-20 22:38:49,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743914097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:49,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:49,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919570258] [2022-07-20 22:38:49,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:49,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:49,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:49,075 INFO L87 Difference]: Start difference. First operand 3751 states and 5639 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:51,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:51,411 INFO L93 Difference]: Finished difference Result 7550 states and 11341 transitions. [2022-07-20 22:38:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2022-07-20 22:38:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:51,417 INFO L225 Difference]: With dead ends: 7550 [2022-07-20 22:38:51,418 INFO L226 Difference]: Without dead ends: 3822 [2022-07-20 22:38:51,421 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 [2022-07-20 22:38:51,423 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 49 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:51,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 569 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:38:51,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2022-07-20 22:38:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3751. [2022-07-20 22:38:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5029333333333332) internal successors, (5636), 3750 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5636 transitions. [2022-07-20 22:38:51,526 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5636 transitions. Word has length 348 [2022-07-20 22:38:51,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:51,526 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5636 transitions. [2022-07-20 22:38:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5636 transitions. [2022-07-20 22:38:51,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-20 22:38:51,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:51,533 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 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] [2022-07-20 22:38:51,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-20 22:38:51,533 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash 712361294, now seen corresponding path program 1 times [2022-07-20 22:38:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:51,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938817767] [2022-07-20 22:38:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 687 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-20 22:38:51,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:51,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938817767] [2022-07-20 22:38:51,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938817767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:51,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:51,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477084988] [2022-07-20 22:38:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:51,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:51,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:51,720 INFO L87 Difference]: Start difference. First operand 3751 states and 5636 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:53,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:53,996 INFO L93 Difference]: Finished difference Result 7601 states and 11395 transitions. [2022-07-20 22:38:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:53,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2022-07-20 22:38:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:54,000 INFO L225 Difference]: With dead ends: 7601 [2022-07-20 22:38:54,000 INFO L226 Difference]: Without dead ends: 3873 [2022-07-20 22:38:54,003 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 [2022-07-20 22:38:54,004 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 44 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:54,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 562 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:38:54,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-07-20 22:38:54,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3751. [2022-07-20 22:38:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3750 states have (on average 1.5008) internal successors, (5628), 3750 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5628 transitions. [2022-07-20 22:38:54,072 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5628 transitions. Word has length 348 [2022-07-20 22:38:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:54,073 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5628 transitions. [2022-07-20 22:38:54,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:54,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5628 transitions. [2022-07-20 22:38:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-20 22:38:54,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:54,080 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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] [2022-07-20 22:38:54,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-20 22:38:54,081 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:54,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1303941643, now seen corresponding path program 1 times [2022-07-20 22:38:54,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:54,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64055463] [2022-07-20 22:38:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 668 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-07-20 22:38:54,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:54,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64055463] [2022-07-20 22:38:54,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64055463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:54,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:54,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:54,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289065401] [2022-07-20 22:38:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:54,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:54,247 INFO L87 Difference]: Start difference. First operand 3751 states and 5628 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:56,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:56,482 INFO L93 Difference]: Finished difference Result 7793 states and 11679 transitions. [2022-07-20 22:38:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2022-07-20 22:38:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:56,487 INFO L225 Difference]: With dead ends: 7793 [2022-07-20 22:38:56,487 INFO L226 Difference]: Without dead ends: 4065 [2022-07-20 22:38:56,490 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 [2022-07-20 22:38:56,490 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 28 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:56,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 554 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:38:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2022-07-20 22:38:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 3959. [2022-07-20 22:38:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3959 states, 3958 states have (on average 1.4987367357251138) internal successors, (5932), 3958 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5932 transitions. [2022-07-20 22:38:56,575 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5932 transitions. Word has length 348 [2022-07-20 22:38:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:56,575 INFO L495 AbstractCegarLoop]: Abstraction has 3959 states and 5932 transitions. [2022-07-20 22:38:56,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5932 transitions. [2022-07-20 22:38:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-07-20 22:38:56,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:56,581 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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] [2022-07-20 22:38:56,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-20 22:38:56,582 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1881309984, now seen corresponding path program 1 times [2022-07-20 22:38:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:56,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206864562] [2022-07-20 22:38:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 682 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-07-20 22:38:56,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:56,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206864562] [2022-07-20 22:38:56,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206864562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:56,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:56,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:38:56,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221068651] [2022-07-20 22:38:56,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:56,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:38:56,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:56,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:38:56,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:38:56,742 INFO L87 Difference]: Start difference. First operand 3959 states and 5932 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:58,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:38:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:38:59,012 INFO L93 Difference]: Finished difference Result 8065 states and 12079 transitions. [2022-07-20 22:38:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:38:59,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 354 [2022-07-20 22:38:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:38:59,018 INFO L225 Difference]: With dead ends: 8065 [2022-07-20 22:38:59,018 INFO L226 Difference]: Without dead ends: 4129 [2022-07-20 22:38:59,022 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 [2022-07-20 22:38:59,023 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 39 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:38:59,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 565 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:38:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2022-07-20 22:38:59,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3959. [2022-07-20 22:38:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3959 states, 3958 states have (on average 1.4967155128852956) internal successors, (5924), 3958 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5924 transitions. [2022-07-20 22:38:59,111 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5924 transitions. Word has length 354 [2022-07-20 22:38:59,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:38:59,112 INFO L495 AbstractCegarLoop]: Abstraction has 3959 states and 5924 transitions. [2022-07-20 22:38:59,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:38:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5924 transitions. [2022-07-20 22:38:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-20 22:38:59,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:38:59,153 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 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] [2022-07-20 22:38:59,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-20 22:38:59,153 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:38:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:38:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1131006309, now seen corresponding path program 2 times [2022-07-20 22:38:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:38:59,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385515761] [2022-07-20 22:38:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:38:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:38:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:38:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 817 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-20 22:38:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:38:59,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385515761] [2022-07-20 22:38:59,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385515761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:38:59,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:38:59,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:38:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141686612] [2022-07-20 22:38:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:38:59,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:38:59,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:38:59,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:38:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:38:59,420 INFO L87 Difference]: Start difference. First operand 3959 states and 5924 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:01,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:39:03,451 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 [] [2022-07-20 22:39:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:04,354 INFO L93 Difference]: Finished difference Result 14483 states and 21737 transitions. [2022-07-20 22:39:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:39:04,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2022-07-20 22:39:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:04,365 INFO L225 Difference]: With dead ends: 14483 [2022-07-20 22:39:04,365 INFO L226 Difference]: Without dead ends: 10547 [2022-07-20 22:39:04,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:39:04,369 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 230 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 57 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:04,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1025 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 663 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-07-20 22:39:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2022-07-20 22:39:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 3827. [2022-07-20 22:39:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3826 states have (on average 1.4960794563512807) internal successors, (5724), 3826 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5724 transitions. [2022-07-20 22:39:04,486 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5724 transitions. Word has length 355 [2022-07-20 22:39:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:04,486 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5724 transitions. [2022-07-20 22:39:04,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5724 transitions. [2022-07-20 22:39:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-20 22:39:04,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:04,491 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 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] [2022-07-20 22:39:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-20 22:39:04,491 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1310451481, now seen corresponding path program 1 times [2022-07-20 22:39:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:04,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666195406] [2022-07-20 22:39:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2022-07-20 22:39:04,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:04,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666195406] [2022-07-20 22:39:04,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666195406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:04,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:04,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:39:04,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999620471] [2022-07-20 22:39:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:04,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:39:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:39:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:39:04,923 INFO L87 Difference]: Start difference. First operand 3827 states and 5724 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:07,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:39:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:08,126 INFO L93 Difference]: Finished difference Result 7651 states and 11444 transitions. [2022-07-20 22:39:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:39:08,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2022-07-20 22:39:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:08,131 INFO L225 Difference]: With dead ends: 7651 [2022-07-20 22:39:08,131 INFO L226 Difference]: Without dead ends: 3827 [2022-07-20 22:39:08,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:39:08,134 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 7 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:08,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 643 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-20 22:39:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2022-07-20 22:39:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 3827. [2022-07-20 22:39:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3826 states have (on average 1.4958180867746995) internal successors, (5723), 3826 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5723 transitions. [2022-07-20 22:39:08,209 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5723 transitions. Word has length 355 [2022-07-20 22:39:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:08,209 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5723 transitions. [2022-07-20 22:39:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5723 transitions. [2022-07-20 22:39:08,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-20 22:39:08,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:08,215 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 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] [2022-07-20 22:39:08,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-20 22:39:08,216 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1162756329, now seen corresponding path program 1 times [2022-07-20 22:39:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:08,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538786921] [2022-07-20 22:39:08,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 395 proven. 706 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-20 22:39:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:09,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538786921] [2022-07-20 22:39:09,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538786921] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:39:09,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823674104] [2022-07-20 22:39:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:09,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:39:09,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:39:09,600 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) [2022-07-20 22:39:09,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 22:39:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:10,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 132 conjunts are in the unsatisfiable core [2022-07-20 22:39:10,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:39:10,620 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-20 22:39:10,621 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 [2022-07-20 22:39:10,718 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-20 22:39:10,719 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 [2022-07-20 22:39:10,759 INFO L356 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-07-20 22:39:10,759 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 33 treesize of output 26 [2022-07-20 22:39:10,816 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 63 treesize of output 39 [2022-07-20 22:39:10,837 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-20 22:39:10,837 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 45 [2022-07-20 22:39:10,858 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-20 22:39:10,859 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 22 treesize of output 31 [2022-07-20 22:39:10,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:10,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:10,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:10,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 44 [2022-07-20 22:39:10,993 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-20 22:39:10,994 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 2 case distinctions, treesize of input 41 treesize of output 44 [2022-07-20 22:39:11,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,167 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 36 treesize of output 35 [2022-07-20 22:39:11,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,174 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 36 treesize of output 35 [2022-07-20 22:39:11,185 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 [2022-07-20 22:39:11,250 INFO L356 Elim1Store]: treesize reduction 31, result has 44.6 percent of original size [2022-07-20 22:39:11,251 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 82 [2022-07-20 22:39:11,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,304 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-20 22:39:11,305 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 75 treesize of output 88 [2022-07-20 22:39:11,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,348 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-20 22:39:11,349 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 30 treesize of output 52 [2022-07-20 22:39:11,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,538 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 171 treesize of output 152 [2022-07-20 22:39:11,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:11,545 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 171 treesize of output 149 [2022-07-20 22:39:11,600 INFO L356 Elim1Store]: treesize reduction 246, result has 22.4 percent of original size [2022-07-20 22:39:11,601 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 10 case distinctions, treesize of input 171 treesize of output 189 [2022-07-20 22:39:13,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,545 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 224 treesize of output 193 [2022-07-20 22:39:13,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,588 INFO L356 Elim1Store]: treesize reduction 156, result has 23.5 percent of original size [2022-07-20 22:39:13,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 220 treesize of output 218 [2022-07-20 22:39:13,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:13,595 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 252 treesize of output 206 [2022-07-20 22:39:15,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,783 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 75 treesize of output 71 [2022-07-20 22:39:15,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,792 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 [2022-07-20 22:39:15,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,821 INFO L356 Elim1Store]: treesize reduction 183, result has 10.3 percent of original size [2022-07-20 22:39:15,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 73 [2022-07-20 22:39:15,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,927 INFO L356 Elim1Store]: treesize reduction 131, result has 25.6 percent of original size [2022-07-20 22:39:15,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 84 [2022-07-20 22:39:15,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,935 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 92 treesize of output 82 [2022-07-20 22:39:15,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:15,942 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 81 treesize of output 68 [2022-07-20 22:39:16,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,638 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 124 [2022-07-20 22:39:16,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 22:39:16,700 INFO L356 Elim1Store]: treesize reduction 113, result has 46.4 percent of original size [2022-07-20 22:39:16,700 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 4 case distinctions, treesize of input 71 treesize of output 137 [2022-07-20 22:39:16,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,726 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-20 22:39:16,727 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 167 treesize of output 130 [2022-07-20 22:39:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,947 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 150 treesize of output 132 [2022-07-20 22:39:16,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,960 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 158 treesize of output 134 [2022-07-20 22:39:16,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:16,995 INFO L356 Elim1Store]: treesize reduction 219, result has 8.8 percent of original size [2022-07-20 22:39:16,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 107 [2022-07-20 22:39:18,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,344 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 153 treesize of output 125 [2022-07-20 22:39:18,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,375 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-20 22:39:18,376 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 93 treesize of output 98 [2022-07-20 22:39:18,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,384 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 145 treesize of output 123 [2022-07-20 22:39:18,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,520 INFO L356 Elim1Store]: treesize reduction 76, result has 31.5 percent of original size [2022-07-20 22:39:18,520 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 221 treesize of output 176 [2022-07-20 22:39:18,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,557 INFO L356 Elim1Store]: treesize reduction 149, result has 22.0 percent of original size [2022-07-20 22:39:18,557 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 4 case distinctions, treesize of input 94 treesize of output 95 [2022-07-20 22:39:18,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,590 INFO L356 Elim1Store]: treesize reduction 68, result has 34.0 percent of original size [2022-07-20 22:39:18,591 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 212 treesize of output 185 [2022-07-20 22:39:18,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,714 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 193 treesize of output 159 [2022-07-20 22:39:18,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,754 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-20 22:39:18,754 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 54 treesize of output 59 [2022-07-20 22:39:18,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:18,764 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 193 treesize of output 159 [2022-07-20 22:39:20,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:20,097 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 201 treesize of output 147 [2022-07-20 22:39:20,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:20,112 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 147 treesize of output 93 [2022-07-20 22:39:20,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:20,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:20,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:20,137 INFO L356 Elim1Store]: treesize reduction 67, result has 11.8 percent of original size [2022-07-20 22:39:20,137 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 51 treesize of output 50 [2022-07-20 22:39:34,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:34,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:34,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:39:34,758 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-07-20 22:39:34,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 17 [2022-07-20 22:39:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 346 proven. 794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:34,792 INFO L328 TraceCheckSpWp]: Computing backward predicates...